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- Title
- THE USE OF DRUG THERAPY FOR ATTENTION DEFICIT HYPERACTIVITY DISORDER (ADHD) IN THE MANAGEMENT OF OPPOSITIONAL DEFIANT DISORDER (ODD): A LITERATURE REVIEW.
- Creator
-
Flowers, Shaina, D'Amato-Kubiet, Leslee, University of Central Florida
- Abstract / Description
-
Children with oppositional defiant disorder (ODD) and a concurrent Axis I diagnosis are often prescribed drug therapy for attention deficit hyperactivity disorder (ADHD) to manage disruptive behavior. However, ODD symptoms tend to be poorly controlled, raising questions about the effectiveness of drug therapy in children with the condition. Safety and long term consequences of pharmacological agents for ODD are important factors clinicians must consider before initiating treatment. The...
Show moreChildren with oppositional defiant disorder (ODD) and a concurrent Axis I diagnosis are often prescribed drug therapy for attention deficit hyperactivity disorder (ADHD) to manage disruptive behavior. However, ODD symptoms tend to be poorly controlled, raising questions about the effectiveness of drug therapy in children with the condition. Safety and long term consequences of pharmacological agents for ODD are important factors clinicians must consider before initiating treatment. The purpose of this literature review is to examine the pharmacodynamics and efficacy of drug therapy used for ODD in school-age children and adolescents. Additionally, awareness of poor behavior patterns and recognition of symptoms associated with ODD in children among health care providers was explored. A literature review exploring ODD and drug therapy for ODD and related behavioral disorders was conducted from various online databases. Results from 15 reviewed studies suggest that pharmacologic therapy is typically prescribed for ODD symptoms when a comorbid condition such as ADHD, a mood disorder, or an anxiety disorder is present. Drug therapy for ADHD has demonstrated effective behavioral outcomes in reducing ODD symptom severity in children and tolerable side effects when used for short-term therapy. Studies have demonstrated success and better control of ODD symptoms with a focused drug therapy regimen. Overall, the benefits of drug therapy can potentially outweigh the risks of adverse effects, and improve the quality of life in children with ODD. In conclusion, uncovering the reasons for poorly controlled ODD in children can be of clinical significance to health care providers and can support decision making when considering drug therapy for children with this condition.
Show less - Date Issued
- 2014
- Identifier
- CFH0004673, ucf:45297
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH0004673
- Title
- Understanding Phonological Memory Deficits in Boys with Attention-deficit/Hyperactivity Disorder (ADHD): Dissociation of Short-Term Storage and Articulatory Rehearsal Processes.
- Creator
-
Bolden, Jennifer, Rapport, Mark, Beidel, Deborah, Sims, Valerie, University of Central Florida
- Abstract / Description
-
current study dissociated and examined the two primary components of the phonological working memory subsystem (-) the short-term store and articulatory rehearsal mechanism (-) in boys with ADHD (n = 18) relative to typically developing boys (n = 15). Word lists of increasing length (2, 4, and 6 words per trial) were presented to and recalled by children following a brief (3 s) interval to assess their phonological short-term storage capacity. Children's ability to utilize the articulatory...
Show morecurrent study dissociated and examined the two primary components of the phonological working memory subsystem (-) the short-term store and articulatory rehearsal mechanism (-) in boys with ADHD (n = 18) relative to typically developing boys (n = 15). Word lists of increasing length (2, 4, and 6 words per trial) were presented to and recalled by children following a brief (3 s) interval to assess their phonological short-term storage capacity. Children's ability to utilize the articulatory rehearsal mechanism to actively maintain information in the phonological short-term store was assessed using word lists at their established memory span but with extended rehearsal times (12 s and 21 s delays). Results indicate that both phonological short-term storage capacity and articulatory rehearsal are impaired or underdeveloped to a significant extent in boys with ADHD relative to typically developing boys, even after controlling for age, SES, IQ, reading ability, and reading speed. Larger magnitude deficits, however, were apparent in short-term storage capacity (ES = 1.15 to 1.98) relative to articulatory rehearsal (ES = 0.47 to 1.02). These findings are consistent with previous reports of deficient phonological short-term memory in boys with ADHD, and suggest that future attempts to develop remedial cognitive interventions for children with ADHD will need to include active components that require children to hold increasingly more information over longer time intervals.
Show less - Date Issued
- 2012
- Identifier
- CFE0004359, ucf:49432
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004359
- Title
- ADHD AND WORKING MEMORY: THE IMPACT OF CENTRAL EXECUTIVE DEFICITS AND OVERWHELMING STORAGE/REHEARSAL CAPACITY ON OBSERVED INATTENTIVE BEHAVIOR.
- Creator
-
Kofler, Michael, Rapport, Mark, University of Central Florida
- Abstract / Description
-
Inattentive behavior is considered a core and pervasive feature of ADHD; however, an alternative model challenges this premise and hypothesizes a functional relationship between working memory and inattentive behavior. The current study investigated whether inattentive behavior in children with ADHD is functionally related to domain-general central executive and/or subsidiary storage/rehearsal components of working memory. Objective observations of children's attentive behavior by...
Show moreInattentive behavior is considered a core and pervasive feature of ADHD; however, an alternative model challenges this premise and hypothesizes a functional relationship between working memory and inattentive behavior. The current study investigated whether inattentive behavior in children with ADHD is functionally related to domain-general central executive and/or subsidiary storage/rehearsal components of working memory. Objective observations of children's attentive behavior by independent observers were conducted while children with ADHD (n=15) and typically developing children (n=14) completed 10 counterbalanced tasks that differentially manipulated central executive, phonological storage/rehearsal, and visuospatial storage/rehearsal demands. Results of latent variable and effect size confidence interval analyses revealed two conditions that completely accounted for the attentive behavior deficits in children with ADHD: (a) placing demands on central executive processing, the effect of which is evident under even low cognitive loads, and (b) overwhelming storage/rehearsal capacity, which has similar effects on children with ADHD and typically developing children but occurs at lower cognitive loads for children with ADHD. Collectively, the results challenge the current DSM-IV conceptualization of ADHD and indicate that inattentive behavior may be secondary to underlying working memory deficits.
Show less - Date Issued
- 2009
- Identifier
- CFE0002695, ucf:48201
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0002695
- Title
- STUDENTS WITH EITHER SPECIFIC LEARNING DISABILITIES OR WITH ATTENTION DEFICIT HYPERACTIVITY DISORDER: PERCEPTIONS OF SELF AS LEARNER IN ONLINE COURSES AT FLORIDA VIRTUAL SCHOOL AND IN THE TRADITIONAL LEARNING ENVIRONMENT.
- Creator
-
Smouse, Theresa, Everette, Robert, University of Central Florida
- Abstract / Description
-
The goal of this research study was to investigate the perception of self as learner for students with Specific Learning Disabilities (SLD) or with Attention Deficit Hyperactivity Disorder (ADHD). Students who had completed at least one mathematics or science course at Florida Virtual School, an online learning environment, were surveyed concerning their perception of self as learner in the online learning environment and in the traditional learning environment in 6 basic areas: feelings of...
Show moreThe goal of this research study was to investigate the perception of self as learner for students with Specific Learning Disabilities (SLD) or with Attention Deficit Hyperactivity Disorder (ADHD). Students who had completed at least one mathematics or science course at Florida Virtual School, an online learning environment, were surveyed concerning their perception of self as learner in the online learning environment and in the traditional learning environment in 6 basic areas: feelings of success; level of comfort; relationship with teachers; and access to, communication with and feedback from teachers; and advantages and disadvantages of each learning environment. Results of parent interviews and anecdotal evidences were also included as data informing the results of this study. The results of this study showed that 1) a greater number of students reported feeling successful in the online environment. 2) the majority of students in all groups reported feeling comfortable in the online learning environment, 98% as compared to 65% in traditional environment. Student comfort in both environments was most frequently related to some element of the environment with a high percentage of mention of disruption caused by peers. 3) Students reported having positive relationships with their online teachers to a higher degree than with their traditional teachers. 4) Students generally felt that access to, communication with, and feedback from instructors, in the online environment had the greatest impact on them and the impact was positive. 5) The most frequently mentioned advantage of the online environment were, flexibility of time, pace and place of learning. Students liked being in control of the time, place, and pace of their learning in the online environment. Students perceived issues with socialization as the greatest disadvantage of the online environment. For the traditional environment, students indicated that the presence of their peers for social interaction and academic interaction was the greatest advantage. The disadvantages in the traditional environment disadvantage in the traditional environment were issues with time, place, and pace of learning, class size, and disruptions caused by other students. 6) Overall, the majority of students indicated that they felt the online learning environment provided them, as a learner, with the greatest number of advantages.
Show less - Date Issued
- 2005
- Identifier
- CFE0000528, ucf:46460
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0000528
- Title
- THE EFFECTS OF ATTENTION DEFICIT/HYPERACTIVITY DISORDER ON FIXATIONS AND SACCADES DURING A SIMULATED DRIVING TASK.
- Creator
-
Michaelis, Jessica, Smither , Janan, University of Central Florida
- Abstract / Description
-
Individuals who have Attention Deficit/Hyperactivity Disorder (ADHD) experience adverse effects relating to driving; in addition, they experience deficits in scanning ability (Barkely et.al, 1996; Fischer et al., 2007; Munoz et al., 2003; Naja-Raja et al., 2007). The present study examined the effects of ADHD on eye tracking while driving. Ten participants consisting of both ADHD and individuals who do not have ADHD were included in this study. It was hypothesized that individuals who have...
Show moreIndividuals who have Attention Deficit/Hyperactivity Disorder (ADHD) experience adverse effects relating to driving; in addition, they experience deficits in scanning ability (Barkely et.al, 1996; Fischer et al., 2007; Munoz et al., 2003; Naja-Raja et al., 2007). The present study examined the effects of ADHD on eye tracking while driving. Ten participants consisting of both ADHD and individuals who do not have ADHD were included in this study. It was hypothesized that individuals who have ADHD will make more saccadic eye movements and thus shorter fixations than individuals who do not have ADHD. Furthermore, it was hypothesized that despite the fact that individuals who have ADHD will make more saccadic eye movements than individuals without ADHD, those individuals with ADHD will commit more traffic violations including collisions compared to individuals who do not have such a diagnosis. Findings indicated that hypothesis one was not supported by the data, whereas hypothesis two was supported in that ADHD individuals had more collisions and committed more traffic violations than the Control group. Additionally, upon conducting a Chi Square test for independence, a significant difference was found in the spatial distributions of the fixations between the ADHD and Control groups. The findings of this study could help better understand the factors involved in ADHD driving and could be used to train individuals with ADHD to become more aware of their surroundings and driving habits and thus become safer drivers.
Show less - Date Issued
- 2011
- Identifier
- CFH0004069, ucf:44791
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH0004069
- Title
- A STRUCTURAL AND FUNCTIONAL ANALYSIS OF HUMAN BRAIN MRI WITH ATTENTION DEFICIT HYPERACTIVITY DISORDER.
- Creator
-
Watane, Arjun A, Bagci, Ulas, University of Central Florida
- Abstract / Description
-
Attention Deficit Hyperactivity Disorder (ADHD) affects 5-10% of children worldwide. Its effects are mainly behavioral, manifesting in symptoms such as inattention, hyperactivity, and impulsivity. If not monitored and treated, ADHD may adversely affect a child's health, education, and social life. Furthermore, the neurological disorder is currently diagnosed through interviews and opinions of teachers, parents, and physicians. Because this is a subjective method of identifying ADHD, it is...
Show moreAttention Deficit Hyperactivity Disorder (ADHD) affects 5-10% of children worldwide. Its effects are mainly behavioral, manifesting in symptoms such as inattention, hyperactivity, and impulsivity. If not monitored and treated, ADHD may adversely affect a child's health, education, and social life. Furthermore, the neurological disorder is currently diagnosed through interviews and opinions of teachers, parents, and physicians. Because this is a subjective method of identifying ADHD, it is easily prone to error and misdiagnosis. Therefore, there is a clear need to develop an objective diagnostic method for ADHD. The focus of this study is to explore the use of machine language classifiers on information from the brain MRI and fMRI of both ADHD and non-ADHD subjects. The imaging data are preprocessed to remove any intra-subject and inter-subject variation. For both MRI and fMRI, similar preprocessing stages are performed, including normalization, skull stripping, realignment, smoothing, and co-registration. The next step is to extract features from the data. For MRI, anatomical features such as cortical thickness, surface area, volume, and intensity are obtained. For fMRI, region of interest (ROI) correlation coefficients between 116 cortical structures are determined. A large number of image features are collected, yet many of them may include redundant and useless information. Therefore, the features used for training and testing the classifiers are selected in two separate ways, feature ranking and stability selection, and their results are compared. Once the best features from MRI and fMRI are determined, the following classifiers are trained and tested through leave-one-out cross validation, experimenting with varying feature numbers, for each imaging modality and feature selection method: support vector machine, support vector regression, random forest, and elastic net. Thus, there are four experiments (MRI-rank, MRI-stability, fMRI-rank, fMRI-stability) with four classifiers in each for a total of 16 classifiers trained per each feature count attempted. The results of each classifier are the decisions of each subject, ADHD or non-ADHD. Finally, a classifier decision ensemble is created through the combination of the outputs of the best classifiers in a majority voting method that includes results of both the MRI and fMRI classifiers and keeps both feature selection results independent. The results suggest that ADHD is more easily identified through fMRI because the classification accuracies are a lot higher using fMRI data rather than MRI data. Furthermore, significant activity correlation differences exist between the brain's frontal lobe and cerebellum and also the left and right hemispheres among ADHD and non-ADHD subjects. When including MRI decisions with fMRI in the classifier ensemble, performance is boosted to a high ADHD detection accuracy of 96.2%, suggesting that MRI information assists in validating fMRI classification decisions. This study is an important step towards the development of an automatic and objective method for ADHD diagnosis. While more work is needed to externally validate and improve the classification accuracy, new applications of current methods with promising results are introduced here.
Show less - Date Issued
- 2017
- Identifier
- CFH2000203, ucf:45978
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH2000203
- Title
- CLASSROOM OBSERVATIONS OF ATTENTION-DEFICIT/HYPERACTIVITY DISORDER: PATTERNS AND CHARACTERISTICS OF ATTENTION OVER TIME.
- Creator
-
Timko Jr, Thomas, Rapport, Mark, University of Central Florida
- Abstract / Description
-
Investigated differences in attentional processes between children diagnosed with Attention-Deficit/Hyperactivity Disorder (ADHD) and their classroom peers. Models of attention gleaned from laboratory experiments provided a theoretical structure for hypothesizing between-group attentional differences. Seventy-five children with ADHD and 36 normal control children were observed in their regular classrooms over a 1-week time interval. Explication of between-group differences revealed that...
Show moreInvestigated differences in attentional processes between children diagnosed with Attention-Deficit/Hyperactivity Disorder (ADHD) and their classroom peers. Models of attention gleaned from laboratory experiments provided a theoretical structure for hypothesizing between-group attentional differences. Seventy-five children with ADHD and 36 normal control children were observed in their regular classrooms over a 1-week time interval. Explication of between-group differences revealed that children with ADHD were approximately 21% less attentive on average. Both groups exhibited an accelerating-decelerating pattern of attention over time, however, children with ADHD cycled at a rate twice that of same-aged peers. Six variables derived from observed attention were examined for diagnostic utility using logistical regression, odds ratios, total predictive value, and receiver operating characteristics. Implications of these findings are discussed.
Show less - Date Issued
- 2005
- Identifier
- CFE0000686, ucf:46485
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0000686
- Title
- CLASSROOM OBSERVATION OF CHILDREN WITH ADHD AND THEIR PEERS: A META-ANALYTIC REVIEW.
- Creator
-
Kofler, Michael, Rapport, Mark, University of Central Florida
- Abstract / Description
-
Meta-analysis of 23 between-group direct observation studies of children with ADHD and typically developing peers indicates significant deficiencies in children with ADHD's ability to pay attention in classroom settings. Comparison with 59 single case design studies of children with ADHD suggests generalizability of between-group comparisons. Weighted regression analysis determined that several methodological differences sample characteristics, diagnostic procedures, and observational...
Show moreMeta-analysis of 23 between-group direct observation studies of children with ADHD and typically developing peers indicates significant deficiencies in children with ADHD's ability to pay attention in classroom settings. Comparison with 59 single case design studies of children with ADHD suggests generalizability of between-group comparisons. Weighted regression analysis determined that several methodological differences sample characteristics, diagnostic procedures, and observational coding schema have significant effects on observed levels of attentive behavior in the classroom. Best case estimation indicates that after accounting for these factors, children with ADHD are on-task approximately 65% of the time compared to 85% for their classroom peers. Children with ADHD were also more variable in their attentive behavior across studies. Implications for conceptual models of ADHD are discussed.
Show less - Date Issued
- 2006
- Identifier
- CFE0000942, ucf:46752
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0000942
- Title
- MEMORY RETRIEVAL DEFICITS IN CHILDREN WITH ADHD: THE MEDIATING ROLE OF WORKING MEMORY.
- Creator
-
Hale, Nicole K., Rapport, Mark D., University of Central Florida
- Abstract / Description
-
Children with ADHD exhibit impairments in memory retrieval processes that are required for successful performance in a wide range of activities including social/interpersonal interactions, as well as academic success. There have been few attempts of explaining the relationship between these memory retrieval deficits in children with ADHD and specific executive functions such as working memory. The current study addresses the possible mediating effects of the subsystems of working memory ...
Show moreChildren with ADHD exhibit impairments in memory retrieval processes that are required for successful performance in a wide range of activities including social/interpersonal interactions, as well as academic success. There have been few attempts of explaining the relationship between these memory retrieval deficits in children with ADHD and specific executive functions such as working memory. The current study addresses the possible mediating effects of the subsystems of working memory (phonological short-term memory, visual-spatial short-term memory, and the central executive) on memory retrieval. Children ages 8-12 with ADHD and typically developing children completed a counterbalanced series of working memory tasks that were specific to the subsystems (phonological and visual-spatial). The Central Executive portion of working memory was obtained using a regression approach of these measures. The children also completed the Kaufman Test of Educational Achievement (KTEA-II), as the associational fluency task was used as the memory retrieval measure for this investigation.
Show less - Date Issued
- 2019
- Identifier
- CFH2000479, ucf:45906
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH2000479
- Title
- PHYSICAL AND BEHAVIORAL COMPLAINTS IN CHILDREN WITH ATTENTION-DEFICIT/HYPERACTIVITY DISORDER (ADHD): PARADOXICAL EFFECTS OF METHYLPHENIDATE.
- Creator
-
Coiro, Maria, Rapport, Mark, University of Central Florida
- Abstract / Description
-
Hypotheses concerning paradoxical, psychostimulant-related side effects experienced by ADHD children were examined in the context of a double-blind, placebo-controlled, within subject (crossover) experimental design. Results revealed that behavioral and physical complaints were significantly higher under baseline relative to placebo and the four methylphenidate (MPH) conditions (5-mg, 10-mg, 15-mg, 20-mg) across three symptom categories: ADHD core/secondary symptoms, symptoms common to all...
Show moreHypotheses concerning paradoxical, psychostimulant-related side effects experienced by ADHD children were examined in the context of a double-blind, placebo-controlled, within subject (crossover) experimental design. Results revealed that behavioral and physical complaints were significantly higher under baseline relative to placebo and the four methylphenidate (MPH) conditions (5-mg, 10-mg, 15-mg, 20-mg) across three symptom categories: ADHD core/secondary symptoms, symptoms common to all children, and symptoms highly specific to MPH. No significant differences were found among active drug conditions. Implications of these findings for assessing and monitoring potential treatment emergent symptoms in children are discussed.
Show less - Date Issued
- 2005
- Identifier
- CFE0000708, ucf:46604
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0000708
- Title
- Impulsivity and Attention-Deficit/Hyperactivity Disorder (ADHD): Testing competing predictions from the working memory and behavioral inhibition models of ADHD.
- Creator
-
Raiker, Joseph, Rapport, Mark, Beidel, Deborah, Mouloua, Mustapha, University of Central Florida
- Abstract / Description
-
Impulsivity is a hallmark of two of the three DSM-IV ADHD subtypes and is associated with myriad adverse outcomes. Limited research, however, is available concerning the mechanisms and processes that contribute to impulsive responding by children with ADHD. The current study tested predictions from two competing models of ADHD (-) working memory (WM) and behavioral inhibition (BI) (-) to examine the extent to which ADHD-related impulsive responding was attributable to model-specific...
Show moreImpulsivity is a hallmark of two of the three DSM-IV ADHD subtypes and is associated with myriad adverse outcomes. Limited research, however, is available concerning the mechanisms and processes that contribute to impulsive responding by children with ADHD. The current study tested predictions from two competing models of ADHD (-) working memory (WM) and behavioral inhibition (BI) (-) to examine the extent to which ADHD-related impulsive responding was attributable to model-specific mechanisms and processes. Children with ADHD (n = 21) and typically developing children (n = 20) completed laboratory tasks that provided WM (domain-general central executive [CE], phonological/visuospatial storage/rehearsal) and BI indices (stop-signal reaction time [SSRT], stop-signal delay, mean reaction time). These indices were examined as potential mediators of ADHD-related impulsive responding on two diverse laboratory tasks used commonly to assess impulsive responding (CPT: continuous performance test; VMTS: visual match-to-sample). Bias-corrected, bootstrapped mediation analyses revealed that CE processes significantly attenuated between-group impulsivity differences, such that the initial large-magnitude impulsivity differences were no longer significant on either task after accounting for ADHD-related CE deficits. In contrast, SSRT partially mediated ADHD-related impulsive responding on the CPT but not VMTS. This partial attenuation was no longer significant after accounting for shared variance between CE and SSRT; CE continued to attenuate the ADHD-impulsivity relationship after accounting for SSRT. These findings add to the growing literature implicating CE deficits in core ADHD behavioral and functional impairments, and suggest that cognitive interventions targeting CE rather than storage/rehearsal or BI processes may hold greater promise for alleviating ADHD-related impairments.
Show less - Date Issued
- 2011
- Identifier
- CFE0004155, ucf:49070
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004155
- Title
- ADHD BEHAVIOR PROBLEMS AND NEAR- AND LONG-TERM SCHOLASTIC ACHIEVEMENT: DIFFERENTIAL MEDIATING EFFECTS OF VERBAL AND VISUOSPATIAL MEMORY.
- Creator
-
Sarver, Dustin, Rapport, Mark, University of Central Florida
- Abstract / Description
-
The current study examined verbal and visuospatial memory abilities as potential mediators of the relationship among ADHD behavior problems and near- and long-term scholastic achievement. Scholastic achievement was measured initially and at 4-year follow-up in an ethnically diverse sample of children (N = 325). Nested composite (reading, math, language) and domain-specific reading structural equation models revealed that ADHD behavior problems exerted a negative influence on scholastic...
Show moreThe current study examined verbal and visuospatial memory abilities as potential mediators of the relationship among ADHD behavior problems and near- and long-term scholastic achievement. Scholastic achievement was measured initially and at 4-year follow-up in an ethnically diverse sample of children (N = 325). Nested composite (reading, math, language) and domain-specific reading structural equation models revealed that ADHD behavior problems exerted a negative influence on scholastic achievement measures, both initially and at follow-up. Much of this influence, however, was mediated by verbal memory's contribution to near-term achievement, whereas visuospatial memory contributed more robustly to long-term achievement. For the domain-specific math achievement model, the collective influence of verbal and visuospatial memory fully mediated the direct influence of ADHD behavior problems on near-term math achievement, and visuospatial memory alone contributed to both near- and long-term achievement. In all models, measured intelligence made no contribution to later achievement beyond its initial influence on early achievement. The results contribute to the understanding of the developmental trajectory of scholastic achievement, and have potential implications for developing remedial programs targeting verbal and visual memory deficits in children with ADHD behavior problems.
Show less - Date Issued
- 2010
- Identifier
- CFE0003502, ucf:48950
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0003502
- Title
- Hyperactivity in attention-deficit/hyperactivity disorder (ADHD): Testing functional relationships with phonological working memory performance and attention.
- Creator
-
Sarver, Dustin, Rapport, Mark, Beidel, Deborah, Mouloua, Mustapha, Vasquez, Eleazar, University of Central Florida
- Abstract / Description
-
Excessive gross motor activity is currently considered a ubiquitous and disruptive feature of attention-deficit/hyperactivity disorder (ADHD); however, an alternative model challenges this premise and hypothesizes a functional relationship between activity level, attention, and working memory. The current study investigated whether, and the extent to which, particular forms of gross motor activity are functionally related to children's attention and phonological working memory performance....
Show moreExcessive gross motor activity is currently considered a ubiquitous and disruptive feature of attention-deficit/hyperactivity disorder (ADHD); however, an alternative model challenges this premise and hypothesizes a functional relationship between activity level, attention, and working memory. The current study investigated whether, and the extent to which, particular forms of gross motor activity are functionally related to children's attention and phonological working memory performance. Objective observations of children's gross motor movements and attention by independent observers were conducted while children with ADHD (n = 29) and typically developing children (n = 23) completed multiple counterbalanced tasks entailing low and high phonological working memory demand. The tasks were then sequenced hierarchically to reflect the lowest to highest activity level condition for each child. Results revealed that (a) ADHD-related phonological working memory performance deficits are moderated by increases in intra-individual activity level, (b) heightened activity level impacts performance independently of changes in observed attention, and (c) increases in particular forms of movement (foot movement and out-of-chair movement) contribute to greater phonological working memory performance within the context of attentive behavior. The findings collectively indicate that phonological working memory deficits in children with ADHD are associated with an inability to up-regulate motor activity to facilitate optimal task performance, and that behavioral treatments targeting reductions in certain forms of hyperactivity may have unintended consequences on working memory functioning in ADHD.
Show less - Date Issued
- 2013
- Identifier
- CFE0004930, ucf:49630
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0004930
- Title
- Phonological Working Memory Deficits in ADHD Revisited: The Role of Lower-Level Information Processing Deficits in Impaired Working Memory Performance.
- Creator
-
Raiker, Joseph, Rapport, Mark, Beidel, Deborah, Mouloua, Mustapha, Vasquez, Eleazar, University of Central Florida
- Abstract / Description
-
Working memory deficits in children with ADHD are well established; however, insufficient evidence exists concerning the degree to which lower-level cognitive processes contribute to these deficits. The current study dissociates lower level information processing abilities (i.e., visual registration, orthographic conversion, and response output) in children with ADHD and typically developing children and examines the unique contribution of these processes to their phonological working memory...
Show moreWorking memory deficits in children with ADHD are well established; however, insufficient evidence exists concerning the degree to which lower-level cognitive processes contribute to these deficits. The current study dissociates lower level information processing abilities (i.e., visual registration, orthographic conversion, and response output) in children with ADHD and typically developing children and examines the unique contribution of these processes to their phonological working memory performance. Thirty-four boys between 8 and 12 years of age (20 ADHD, 14 typically developing) were administered novel information processing and phonological working memory tasks. Between-group differences were examined and bootstrap mediation analysis was used to evaluate the mediating effect of information processing deficits on phonological working memory performance. Results revealed moderate to large magnitude deficits in visual registration and encoding, orthographic to phonological conversion, and phonological working memory in children with ADHD. Subsequent mediation analyses, however, revealed that visual registration/encoding alone mediated the diagnostic group status/phonological working memory relationship and accounted for approximately 32% of the variance in children's phonological working memory performance. Diagnostic and treatment implications for understanding the complex interplay among multiple cognitive deficits in children with ADHD are discussed.
Show less - Date Issued
- 2014
- Identifier
- CFE0005694, ucf:50141
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0005694
- Title
- DOMESTIC PARENT-CHILD INTERACTION PROBLEMS AND WORKING MEMORY: THE MEDIATING ROLE OF INATTENTIVE ADHD SYMPTOMS.
- Creator
-
Mohan, Svetha, Rapport, Mark, University of Central Florida
- Abstract / Description
-
The intent of this thesis is to explore the mediating effects of ADHD Inattentive symptoms on domestic parent-child interaction problems and working memory. Inattentive symptoms in children with ADHD are known to cause forgetfulness, slow processing speed, and negative parent-child interactions. Working memory deficits in phonological short term memory and the central executive are also well-established in children with ADHD. However, it is currently unknown to what extent inattentive...
Show moreThe intent of this thesis is to explore the mediating effects of ADHD Inattentive symptoms on domestic parent-child interaction problems and working memory. Inattentive symptoms in children with ADHD are known to cause forgetfulness, slow processing speed, and negative parent-child interactions. Working memory deficits in phonological short term memory and the central executive are also well-established in children with ADHD. However, it is currently unknown to what extent inattentive symptoms are responsible for home behavior problems in conjunction with phonological working memory deficits. The aims are tested using two validated, common clinical questionnaires: The Teacher Report Form and the Home Situations Questionnaire. Additionally, working memory and executive function are tested using a phonological letter-number sequencing task and a visuospatial dot-in-the-box task. Results show that inattentive symptoms mediate the relationship between working memory and parent-child interaction problems. Teacher reports of inattention affect the degree to which the child experiences behavior problems at home, and also affects the phonological working memory system implicated in this behavior. Future directions include using a more diverse sample, investigating a wider range of ADHD symptoms, investigating effects across multiple settings, and exploring possibilities of additional executive functioning mediators.
Show less - Date Issued
- 2017
- Identifier
- CFH2000161, ucf:45976
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH2000161
- Title
- HYPERACTIVITY IN BOYS WITH ATTENTION-DEFICIT/HYPERACTIVITY DISORDER: A UBIQUITOUS CORE SYMPTOM OR MANIFESTATION OF WORKING MEMORY DEFICITS?.
- Creator
-
Bolden, Jennifer, Rapport, Mark, University of Central Florida
- Abstract / Description
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Hyperactivity is currently considered a core and ubiquitous feature of attention-deficit/hyperactivity disorder (ADHD); however, an alternative model challenges this premise and hypothesizes a functional relationship between working memory (WM) and activity level. The current study investigated whether children's activity level is functionally related to WM demands associated with the domain-general central executive and subsidiary storage/rehearsal components using tasks based on...
Show moreHyperactivity is currently considered a core and ubiquitous feature of attention-deficit/hyperactivity disorder (ADHD); however, an alternative model challenges this premise and hypothesizes a functional relationship between working memory (WM) and activity level. The current study investigated whether children's activity level is functionally related to WM demands associated with the domain-general central executive and subsidiary storage/rehearsal components using tasks based on Baddeley's (2007) WM model. Activity level was objectively measured 16 times per second using wrist- and ankle-worn actigraphs while 23 boys between 8 and 12 years of age completed control tasks and visuospatial/phonological WM tasks of increasing memory demands. All children exhibited significantly higher activity rates under all WM relative to control conditions, and children with ADHD (n=12) moved significantly more than typically developing children (n=11) under all conditions. Activity level in all children was associated with central executive but not storage/rehearsal functioning, and higher activity rates exhibited by children with ADHD under control conditions were fully attenuated by removing variance directly related to central executive processes.
Show less - Date Issued
- 2008
- Identifier
- CFE0002455, ucf:47702
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0002455
- Title
- ADHD AND STOP-SIGNAL BEHAVIORAL INHIBITION: IS MEAN REACTION TIME CONTAMINATED BY EXPOSURE TO INTERMITTENT STOP-SIGNALS?.
- Creator
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Alderson, Robert, Rapport, Mark, University of Central Florida
- Abstract / Description
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The current study investigates two recently identified threats to the construct validity of behavioral inhibition as a core deficit of attention-deficit/hyperactivity disorder (ADHD) based on the Stop-signal task: calculation of mean reaction time from go-trials presented adjacent to intermittent stop-trials, and non-reporting of the stop-signal delay metric. Children with ADHD (n=12) and typically developing children (TD) (n=11) were administered the standard stop-signal task and three...
Show moreThe current study investigates two recently identified threats to the construct validity of behavioral inhibition as a core deficit of attention-deficit/hyperactivity disorder (ADHD) based on the Stop-signal task: calculation of mean reaction time from go-trials presented adjacent to intermittent stop-trials, and non-reporting of the stop-signal delay metric. Children with ADHD (n=12) and typically developing children (TD) (n=11) were administered the standard stop-signal task and three variant stop-signal conditions. These included a No-Tone condition administered without the presentation of an auditory tone; an Ignore-Tone condition that presented a neutral (i.e., not associated with stopping) auditory tone; and a second Ignore-Tone condition that presented a neutral auditory tone after the tone had been previously paired with stopping. Children with ADHD exhibited significantly slower and more variable reaction times to go-stimuli, and slower stop-signal reaction times (SSRT) relative to TD controls. Stop-signal delay (SSD) was not significantly different between groups, and both groups' go-trial reaction times slowed following meaningful tones. Collectively, these findings corroborate recent meta-analyses and indicate that previous findings of stop-signal performance deficits in ADHD reflect slower and more variable responding to visually presented stimuli and concurrent processing of a second stimulus, rather than deficits of motor behavioral inhibition.
Show less - Date Issued
- 2008
- Identifier
- CFE0002218, ucf:47881
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0002218
- Title
- Applied problem solving in children with ADHD: The mediating roles of working memory and mathematical calculation.
- Creator
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Friedman, Lauren, Rapport, Mark, Beidel, Deborah, Vasquez, Eleazar, University of Central Florida
- Abstract / Description
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The difficulties children with ADHD experience solving applied math problems (i.e., word problems) are well documented; however, the independent and/or interactive contribution of cognitive processes underlying these difficulties is not fully understood and warrant scrutiny. The current study examines two primary cognitive processes integral to children's ability to solve applied math problems: working memory (WM) and math calculation ability (i.e., the ability to utilize specific facts,...
Show moreThe difficulties children with ADHD experience solving applied math problems (i.e., word problems) are well documented; however, the independent and/or interactive contribution of cognitive processes underlying these difficulties is not fully understood and warrant scrutiny. The current study examines two primary cognitive processes integral to children's ability to solve applied math problems: working memory (WM) and math calculation ability (i.e., the ability to utilize specific facts, skills, or processes related to basic math operations stored in long-term memory). Thirty-six boys with ADHD-combined presentation and 33 typically developing (TD) boys aged 8-12 years old were administered multiple counterbalanced tasks to assess upper (central executive [CE]) and lower level (phonological [PH STM] and visuospatial [VS STM] short-term memory) WM processes, and standardized measures of mathematical abilities. Bias-corrected, bootstrapped mediation analyses revealed that CE ability fully mediated between-group differences in applied problem solving whereas math calculation ability partially mediated the relation. Neither PH STM nor VS STM was a significant mediator. When modeled together via serial mediation analysis, CE in tandem with math calculation ability fully mediated the relation, explained 79% of the variance, and provided a more parsimonious explication of ADHD-related deficits in applied math ability. Results suggest that interventions designed to address applied math difficulties in children with ADHD will likely benefit from targeting basic knowledge of math facts and skills while simultaneously promoting the active interplay among these skills and CE processes.
Show less - Date Issued
- 2017
- Identifier
- CFE0006593, ucf:51300
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0006593
- Title
- Inattentive behavior in boys with ADHD during classroom instruction: The mediating role of working memory processes.
- Creator
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Orban, Sarah, Rapport, Mark, Beidel, Deborah, Cassisi, Jeffrey, University of Central Florida
- Abstract / Description
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Children with ADHD exhibit clinically impairing inattentive behavior during classroom instruction and other cognitively demanding contexts. However, there have been surprisingly few attempts to validate anecdotal parent/teacher reports of intact sustained attention during 'preferred' activities such as watching movies. The current investigation addresses this omission, and provides an initial test of how ADHD-related working memory deficits contribute to inattentive behavior during classroom...
Show moreChildren with ADHD exhibit clinically impairing inattentive behavior during classroom instruction and other cognitively demanding contexts. However, there have been surprisingly few attempts to validate anecdotal parent/teacher reports of intact sustained attention during 'preferred' activities such as watching movies. The current investigation addresses this omission, and provides an initial test of how ADHD-related working memory deficits contribute to inattentive behavior during classroom instruction. Boys ages 8-12 (M=9.62, SD=1.22) with ADHD (n=32) and typically developing children (TD; n=30) completed a counterbalanced series of working memory tests and two videos on separate assessment days: an analogue math instructional video, and a non-instructional video selected to match the content and cognitive demands of parent/teacher-described 'preferred' activities. Objective, reliable observations of attentive behavior revealed no between-group differences during the non-instructional video (d=-0.02), and attentive behavior during the non-instructional video was unrelated to all working memory variables (r=-.11 to .19,ns). In contrast, the ADHD group showed disproportionate attentive behavior decrements during analogue classroom instruction (d=-0.71). Bias-corrected, bootstrapped, serial mediation revealed that 59% of this between-group difference was attributable to ADHD-related impairments in central executive working memory, both directly (ER=41%) and indirectly via its role in coordinating phonological short-term memory (ER=15%). Between-group attentive behavior differences were no longer detectable after accounting for ADHD-related working memory impairments (d=-0.29, ns). Results confirm anecdotal reports of intact sustained attention during activities that place minimal demands on working memory, and indicate that ADHD children's inattention during analogue classroom instruction is related, in large part, to their underdeveloped working memory abilities.
Show less - Date Issued
- 2017
- Identifier
- CFE0006633, ucf:51290
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0006633
- Title
- HOW SYMPTOMS OF ANXIETY, DEPRESSION, ATTENTION DEFICIT DISORDER (ADD) OR ATTENTION DEFICIT HYPERACTIVITY DISORDER (ADHD) CONTRIBUTE TO STUDENTS SELF-MEDICATING VIA MARIJUANA AND NON-MEDICAL PRESCRIPTION DRUGS.
- Creator
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Thomas, Maria, Donley, Dr. Amy, University of Central Florida
- Abstract / Description
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This study examines student's nonmedical prescription drug (NMPD) and marijuana use and whether anxiety, depression, ADD or ADHD symptoms are associated with their use and if students are self-medicating to alleviate symptoms. The method of obtaining this information was provided by a total of 278 college students who voluntarily and anonymously completed a Web-based survey. This study fills in the gaps of previous research and reveals the most frequent NMPD's used by students and their...
Show moreThis study examines student's nonmedical prescription drug (NMPD) and marijuana use and whether anxiety, depression, ADD or ADHD symptoms are associated with their use and if students are self-medicating to alleviate symptoms. The method of obtaining this information was provided by a total of 278 college students who voluntarily and anonymously completed a Web-based survey. This study fills in the gaps of previous research and reveals the most frequent NMPD's used by students and their overall perceptions of their intended effects of the drug and answers why students do not seek professional help for their anxiety, depression and impulsivity symptoms. Results from the survey indicate that students who report NMPD use self- reported higher symptoms of anxiety, depression and impulsivity. NMPD users reported higher percentages of other substance abuse compared to nonusers. The most prominent NMPD's used by students are Adderall and Vicoden or Codeine. Data also indicates student's primary reasons for their NMPD use are related to academic purposes; as opposed to nonacademic. This analysis is further supported by the fact that the majority of NMPD users did not use before they began college and do not use while classes are not is session. Furthermore, students perceive their overall intended effects of their NMPD use to be beneficial, despite the known risks associated with their drug use. By examining college student's current NMPD use we can provide alternative solutions to students who are self-medicating as a coping mechanism for underlying issues or mental health disorders. Also, we can provide them with the necessary services in order to address their problems professionally.
Show less - Date Issued
- 2013
- Identifier
- CFH0004445, ucf:45114
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFH0004445