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Examining the Social Interactions of Young Adults with Autism Spectrum Disorders in a Virtual Environment
Title
Examining the Social Interactions of Young Adults with Autism Spectrum Disorders in a Virtual Environment.
Creator
Gallup, Jennifer, Little, Mary, Dieker, Lisa, Butler, Malcolm, Pearl, Cynthia, University of Central Florida
Abstract / Description
This phenomenological study examined the social interactions during online game play in a virtual environment for five young adults with an autism spectrum disorder (ASD) who attended a large metropolitan university, enrolled in the first 60 credits of a science, technology, engineering, or mathematics (STEM) field of study. Given the evolution of technology and opportunities to socialize in virtual communities, it is becoming increasingly important to understand how young adults with ASD...
Show moreThis phenomenological study examined the social interactions during online game play in a virtual environment for five young adults with an autism spectrum disorder (ASD) who attended a large metropolitan university, enrolled in the first 60 credits of a science, technology, engineering, or mathematics (STEM) field of study. Given the evolution of technology and opportunities to socialize in virtual communities, it is becoming increasingly important to understand how young adults with ASD assimilate into new social opportunities that provide supports for extraneous variables such as face-to-face situations. As research begins to emerge on virtual environments there is little research addressed specific to socialization and the development of interpersonal relationships. Further, there is a distinct lack of research specific to young adults with ASD who engage socially in virtual environments. A phenomenological research method was used to explain the social activities as they occurred for this specific group of individuals. Structured and unstructured interviews, observations, document analysis, and a self-reporting survey were conducted and collected. Analysis used emergent coding following Moustakas' modified Van Kaam method (1994). Common themes were identified and reported through lists and tables. In summary, this study described how young adults with ASD socialized within a virtual community. This study provided findings that individuals with ASD actively seek friendships, recognize emotions, understand roles within the game and real life use skills necessary for success in postsecondary education and STEM related careers, and lays the foundation for continuing research using virtual environments to support interpersonal relationships that may support greater postsecondary outcomes.
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Date Issued
2015
Identifier
CFE0005796, ucf:50024
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0005796
A SYSTEMIC LITERATURE REVIEW EXPLORING THE EFFECTS OF OCCUPATIONAL THERAPY REHABILITATION AND MOTIVATION ON GERIATRIC PATIENTS
Title
A SYSTEMIC LITERATURE REVIEW EXPLORING THE EFFECTS OF OCCUPATIONAL THERAPY REHABILITATION AND MOTIVATION ON GERIATRIC PATIENTS.
Creator
Buckman, Melissa A, Biddle, Jeffrey, University of Central Florida
Abstract / Description
The purpose of this thesis was to examine the effects of occupational therapy rehabilitation on geriatric patients by reviewing studies conducted on motivation in occupational therapy. In occupational therapy it is important that you set goals for your patients (Creek & Lougher, 2008). It is also important to understand what motivates a patient to achieve those goals because goals and valued activities are intimately connected to motivation. Motivation deals with why we perform certain...
Show moreThe purpose of this thesis was to examine the effects of occupational therapy rehabilitation on geriatric patients by reviewing studies conducted on motivation in occupational therapy. In occupational therapy it is important that you set goals for your patients (Creek & Lougher, 2008). It is also important to understand what motivates a patient to achieve those goals because goals and valued activities are intimately connected to motivation. Motivation deals with why we perform certain behaviors. It can predict physical performance and how well a person might recover from an illness and has been suggested to be predictive for rehabilitation success (Carlson, 1997). Because the geriatric population has more longevity, it is important to ensure that they receive the appropriate care necessary to improve and maintain their quality of life (Mason, 1994). After reviewing multiple studies the results reinforced the importance of motivation in occupational therapy treatment. Self-efficacy was found to highly influence a person�s motivation and was a recurring theme throughout this review (Peralta-Catipon & Hwang, 2011). One key to understanding and studying motivation in older adults was to identify what occupations matter to them (Teitelman, Raber, & Watts, 2010). It is important that occupational therapists understand how occupations become meaningful for the geriatric population as participation in those occupations plays an important role in promoting productive aging. When the occupational therapist was able to understand how occupations became meaningful to the patient, they were more equipped to help motivate the patient to participate in their rehabilitation (Janssen & Stube, 2013).
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Date Issued
2016
Identifier
CFH2000007, ucf:45575
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFH2000007
Psychometric Properties of a Social Skills Assessment Using Virtual Environment
Title
Psychometric Properties of a Social Skills Assessment Using Virtual Environment.
Creator
Le, Thien-An, Beidel, Deborah, Paulson, Daniel, Bowers, Clint, University of Central Florida
Abstract / Description
Background: Social Anxiety Disorder (SAD) is a marked and persistent fear of social and/or performance situations in which embarrassment or scrutiny from others may occur. In children, this marked and persistent fear must be present in peer settings and is not exclusive to interactions with adults (American Psychiatric Association [APA], 2013). Behaviorally, children with SAD may avoid eye contact and exhibit other behavioral symptoms such as stooped shoulders, nail biting, trembling voice,...
Show moreBackground: Social Anxiety Disorder (SAD) is a marked and persistent fear of social and/or performance situations in which embarrassment or scrutiny from others may occur. In children, this marked and persistent fear must be present in peer settings and is not exclusive to interactions with adults (American Psychiatric Association [APA], 2013). Behaviorally, children with SAD may avoid eye contact and exhibit other behavioral symptoms such as stooped shoulders, nail biting, trembling voice, avoidance of social and performance situations, muffled voice, longer speech latency, inappropriate tone or low voice volume, and lack of spontaneous speech (Beidel (&) Turner, 2007; Ollendick, Benoit, (&) Grills-Taquechel, 2014; Spence, Donovan, (&) Brechman-Toussaint, 1999). Currently, there are several methods of assessing symptom severity of SAD, such as structured and semi-structured interviews supplemented by self- and parent-report forms, as well as behavioral assessment of social skills, such as RPTs. However, RPTs inherently present with feasibility concerns as there are several obstacles for its implementation. Thus, the current study will examine the psychometric properties of a VE based social skills assessment as it compares to the traditional RPT. Methods: Participants were 46 children, ages 7 to 14, who underwent two assessment conditions: RPT and VE BAT. Participants were assessed prior to the assessment conditions using the ADIS-C/P and completed several self- and parent-report forms. Participants reported self-ratings of anxiety and acceptability, while blinded observers rated social skills and overall social anxiety. Results: A paired-samples t-test revealed (a) no significant difference in acceptability between the two tasks (t(36) = .209, p (>) .05); (b) the VE BAT elicited somewhat less anxiety and somewhat more skilled social behavior than a comparable and traditional RPT; (c) the VE BAT demonstrated moderate concurrent validity with the SPAI-C (r = .422, p = .004); (d) behaviors were rated as consistent across assessment tasks for speech latency ( r = .367, p = .016), overall effectiveness ( r = .541, p = .000), overall social anxiety (r = .638, p = .000), and SAM ratings (r = .730, p = .000) and; (e) VE BAT was more feasible to implement than the RPT in terms of personnel time (t(45) = 12.87, p = .00, d = 2.69) and costs (t(45) = 12.88, p = .00, d = 1.83). Conclusion: The current study addresses many of the discussed limitations of conducting RPTs and, overall, supports the utilization of VE BATS as a viable alternative to behaviorally assessing social skills in children. Overall, the current study demonstrates acceptability, validity, and feasibility of implementing such a novel method, where a formal RPT is not possible. Further implications for the current study include that VEs have potential in the armamentarium for social skills training with children with SAD.
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Date Issued
2016
Identifier
CFE0006134, ucf:51178
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0006134
Evaluating the utility of a virtual environment for childhood social anxiety disorder
Title
Evaluating the utility of a virtual environment for childhood social anxiety disorder.
Creator
Wong, Nina, Beidel, Deborah, Rapport, Mark, Sims, Valerie, University of Central Florida
Abstract / Description
Objective: Two significant challenges for the dissemination of social skills training programs are (a) the need to provide sufficient practice opportunities to assure skill consolidation and (b) the need to assure skill generalization (i.e., use of the skills outside the clinic setting). In the case of social anxiety disorder, virtual environments may provide one strategy to address these issues. This investigation describes the development of an interactive skills-oriented virtual school...
Show moreObjective: Two significant challenges for the dissemination of social skills training programs are (a) the need to provide sufficient practice opportunities to assure skill consolidation and (b) the need to assure skill generalization (i.e., use of the skills outside the clinic setting). In the case of social anxiety disorder, virtual environments may provide one strategy to address these issues. This investigation describes the development of an interactive skills-oriented virtual school environment and evaluated its utility for the treatment of social anxiety disorder in preadolescent children (Study 1). This environment included both in-clinic and at-home solutions. In addition, a pilot replication/extension study further examined preliminary treatment efficacy between children who received a standard multi-component treatment and children who received the modified treatment with social skills practice in a virtual environment (Study 2). Method: Eleven children with a primary diagnosis of social anxiety disorder between 7 to 12 years old participated in the initial feasibility trial (Study 1). Five additional children participated in the replication/extension study (Study 2). To investigate preliminary treatment efficacy, clinical outcome measures for the Study 2 sample were compared to a comparison sample who received the standard treatment. Results: Overall, the virtual environment program was viewed as acceptable, feasible, and credible treatment components to children, parents, and clinicians alike but modifications would likely improve the current version. Additionally, although preliminary, children who received the modified treatment with virtual environment practice demonstrated significant improvement at post-treatment on clinician ratings but not parent or self-reported measures. Conclusion: Virtual environments are feasible, acceptable, and credible treatment components for clinical use. Future investigations will determine if the addition of this dose-controlled and intensive social skills practice results in treatment outcome equivalent to traditional cognitive-behavioral programs.
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Date Issued
2013
Identifier
CFE0004962, ucf:49583
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0004962
Gesture Assessment of Teachers in an Immersive Rehearsal Environment
Title
Gesture Assessment of Teachers in an Immersive Rehearsal Environment.
Creator
Barmaki, Roghayeh, Hughes, Charles, Foroosh, Hassan, Sukthankar, Gita, Dieker, Lisa, University of Central Florida
Abstract / Description
Interactive training environments typically include feedback mechanisms designed to help trainees improve their performance through either guided- or self-reflection. When the training system deals with human-to-human communications, as one would find in a teacher, counselor, enterprise culture or cross-cultural trainer, such feedback needs to focus on all aspects of human communication. This means that, in addition to verbal communication, nonverbal messages must be captured and analyzed for...
Show moreInteractive training environments typically include feedback mechanisms designed to help trainees improve their performance through either guided- or self-reflection. When the training system deals with human-to-human communications, as one would find in a teacher, counselor, enterprise culture or cross-cultural trainer, such feedback needs to focus on all aspects of human communication. This means that, in addition to verbal communication, nonverbal messages must be captured and analyzed for semantic meaning.?The goal of this dissertation is to employ machine-learning algorithms that semi-automate and, where supported, automate event tagging in training systems developed to improve human-to-human interaction. The specific context in which we prototype and validate these models is the TeachLivE teacher rehearsal environment developed at the University of Central Florida. The choice of this environment was governed by its availability, large user population, ?extensibility and existing reflection tools found within the AMITIES ??framework underlying the TeachLivE system.?Our contribution includes accuracy improvement of the existing data-driven gesture recognition utility from Microsoft; called Visual Gesture Builder. Using this proposed methodology and tracking sensors, we created a gesture database and used it for the implementation of our proposed online gesture recognition and feedback application. We also investigated multiple methods of feedback provision, including visual and haptics. The results from the conducted user studies indicate the positive impact of the proposed feedback applications and informed body language in teaching competency.In this dissertation, we describe the context in which the algorithms have been developed, the importance of recognizing nonverbal communication in this context, the means of providing semi- and fully-automated feedback associated with nonverbal messaging, and a series of preliminary studies developed to inform the research. Furthermore, we outline future research directions on new case studies, and multimodal annotation and analysis, in order to understand the synchrony of acoustic features and gestures in teaching context.
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Date Issued
2016
Identifier
CFE0006260, ucf:51053
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0006260
The Experience of Physical and Social Presence in a Virtual Learning Environment as Impacted by the Affordance of Movement Enabled by Motion Tracking
Title
The Experience of Physical and Social Presence in a Virtual Learning Environment as Impacted by the Affordance of Movement Enabled by Motion Tracking.
Creator
Hayes, Aleshia, Hughes, Charles, Dieker, Lisa, Marino, Matthew, Bailenson, Jeremy, University of Central Florida
Abstract / Description
This research synthesizes existing research findings that social presence (sense of connection with others) and physical presence (sense of being there) increase learning outcomes in Virtual Learning Environments (VLEs) with findings that traditional motion tracking of participants wearing head mounted displays in virtual reality increases both physical and social presence. This information suggests that motion tracking in mixed reality VLEs has a positive impact on social presence and on...
Show moreThis research synthesizes existing research findings that social presence (sense of connection with others) and physical presence (sense of being there) increase learning outcomes in Virtual Learning Environments (VLEs) with findings that traditional motion tracking of participants wearing head mounted displays in virtual reality increases both physical and social presence. This information suggests that motion tracking in mixed reality VLEs has a positive impact on social presence and on physical presence. For this study, the affordance of free movement among virtual objects is enabled by Microsoft Kinect tracking of the user's position that is translated to movement of the virtual camera to simulate user movement and proximity to elements of the virtual environment.This study used a mixed method, multimodal approach including qualitative, subjective, objective, and physiological data to measure social and physical presence. The testbed for this research was TLE TeachLivE(TM), a mixed reality classroom populated with virtual students. The subjective measures are 1) modified Witmer and Singer Questionnaire and 2) Social Presence Instrument (Bailenson, 2002b). The objective measure is a literature based Social Presence Behavioral Coding sheet used to record frequency of occurrences of factors of social presence. Finally, the physiological measure is heart rate as recorded by the MIO Alpha. The primary contribution of this study was that the hypotheses that the affordance of movement in a mixed reality classroom has a positive impact on user perception and experience of a) physical presence and b) social presence in a VLE were supported. This hypothesis was supported in all three measures. The secondary contribution of this research is the literature based Social Presence Behavioral Coding. The final contribution of this research is a research framework that integrates subjective, objective, and physiological measures of social presence in one study. This approach can be applied to various user experience research studies of various VLEs. Finally, in addition to general alignment of the physiological, objective, and subjective measures, there were anecdotal instances of factors of social presence occurring simultaneously with increased heart rate.
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Date Issued
2015
Identifier
CFE0006220, ucf:51061
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0006220
Examining Facebook as a Digitally Immersive Language Environment for French Language Learners
Title
Examining Facebook as a Digitally Immersive Language Environment for French Language Learners.
Creator
Wyatt, Shelly, Gunter, Glenda, Witta, Eleanor, Boyd, Tammy, Crevecoeur, Edwidge, Metcalf, David, University of Central Florida
Abstract / Description
This quasi-experimental study examined the impact of interactions with native French language Facebook posts on beginning French language learners' willingness to communicate (WTC) and their attitudes towards the target language and culture in a university setting. In addition, the degree of interaction, by participants, with the French language Facebook posts was recorded and analyzed. This study was conducted during the Spring 2013 semester at the University of Central Florida in Orlando,...
Show moreThis quasi-experimental study examined the impact of interactions with native French language Facebook posts on beginning French language learners' willingness to communicate (WTC) and their attitudes towards the target language and culture in a university setting. In addition, the degree of interaction, by participants, with the French language Facebook posts was recorded and analyzed. This study was conducted during the Spring 2013 semester at the University of Central Florida in Orlando, Florida. Participants in this study were recruited from two sections of FRE 1120, Elementary French Language and Civilization I. Native French language Facebook posts were (")pushed(") to participants' personal Facebook News Feeds over the course of four weeks, with posts pushed on weekdays only and Facebook polls asking for participant feedback on Fridays. Two instruments were used in this study to obtain participants' demographic information and to measure willingness to communicate as well attitudes towards the target language and culture. In addition, the researcher gathered observational data directly from Facebook.Data were analyzed using a Split-plot ANOVA and descriptive statistics. A total of 26 participants completed the study, with 14 participants in the control group and 12 participants in the treatment group. Both sections of FRE 1120 were conducted in a traditional, face-to-face format and were taught by the same instructor. Results indicated that participants' willingness to communicate in French and their attitudes towards the target language and culture were not significantly impacted by interaction with native French language Facebook posts. The level of Facebook-facilitated interactions in all areas, including (")Liking,(") Sharing,(") and (")Commenting(") was low. Self-reported interactions, including reading, viewing and translating of French language Facebook posts; Reading and viewing posts (such as simply viewing a photo) was the most frequently reported interaction, with (")Commenting(") and (")Sharing(") was the least common interaction. Opportunities for future research are numerous and include increasing the size of the sample, increasing the length of the study, and selected participants' who are more advanced in their mastery of the target language. The potential of social network sites to serve as digitally immersive environments for foreign language learners should be explored in more depth and across various languages.
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Date Issued
2013
Identifier
CFE0005076, ucf:49957
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0005076
Community Participation and Travel Choice: An Analysis of Central Florida New Urban and Conventional Suburban Residents
Title
Community Participation and Travel Choice: An Analysis of Central Florida New Urban and Conventional Suburban Residents.
Creator
Mikovsky, Laura, Korosec, Ronnie, Hawkins, Christopher, Knox, Claire, Beitsch, Owen, University of Central Florida
Abstract / Description
Previous research has demonstrated a relationship between the built environment and social and transportation outcomes when comparing traditional and conventional suburban neighborhoods, but much remains to be learned about whether New Urbanism can produce similar results. Among studies where new urban neighborhoods have been assessed, most have centered on regions with highly-utilized public transit systems and with climates that are amenable to utilitarian physical activity. This research...
Show morePrevious research has demonstrated a relationship between the built environment and social and transportation outcomes when comparing traditional and conventional suburban neighborhoods, but much remains to be learned about whether New Urbanism can produce similar results. Among studies where new urban neighborhoods have been assessed, most have centered on regions with highly-utilized public transit systems and with climates that are amenable to utilitarian physical activity. This research sought to build on the existing research base through direct comparison of new urban and conventional suburban neighborhoods in central Florida, a region with an under-developed transit system and a climate that renders utilitarian physical activity impractical. Further, this research sought to lend greater insights into neighborhood selection factors across neighborhood types.(<)p(>)(<)p(>)A mixed-methods, single-case design was utilized to evaluate one new urban and one conventional suburban neighborhood in the central Florida region. Regional new urban neighborhoods were subjectively rated for adherence to tenets of the Charter of the New Urbanism, with the neighborhood (Celebration, in Osceola County, FL) found to most closely adhere to these tenets selected as the experimental group for the study. A socio-demographically comparable conventional suburban neighborhood (Sweetwater, in Seminole County, FL) was selected as the control group. Quantitative methods consisted of a household survey issued to 250 randomly- and convenience-sampled addresses in each neighborhood, followed by regression analysis to evaluate study hypotheses. Qualitative methods employed analysis of open-ended survey responses, detailed case studies of selected neighborhoods, and resident interviews. The household survey yielded net response rates of 15.79 percent and 25.50 percent for experimental and control neighborhoods, respectively, and a mean cross-neighborhood response rate of 20.64 percent. Twenty resident interviews (10 per neighborhood) were conducted. Quantitative and qualitative findings were compared to collectively address research questions.(<)p(>)(<)p(>)Regression results indicated no statistically significant difference between neighborhoods in attitudinal and behavioral components of community participation, in vehicle miles driven per week, or utilitarian physical activity frequency. However, results indicated that new urban residents had more positive attitudes toward utilitarian physical activity than conventional suburban residents and that attitudes toward community participation and utilitarian physical activity were positively correlated with associated behaviors. Qualitative findings provided substantial individual- and environmental-level insights to factors impacting evaluated attitudes and behaviors, and supported some quantitative findings while not aligning with others. Neighborhood selection factors were found to be quite different across neighborhoods: Celebration residents identified neighborhood social atmosphere and connection to the Walt Disney Company brand as top contributors to their selection decision, while Sweetwater residents expressed that access to quality schools was the most important factor in their selection decision. Qualitative findings indicated that car culture and climate within the central Florida region diminished both attitudinal and behavioral components of utilitarian physical activity across neighborhood types.(<)p(>)(<)p(>)This research expanded the understanding of the social and transportation outcomes of New Urbanism, particularly with respect to the central Florida region. While case and quantitative limitations may have impeded the ability of this study to draw decisive conclusions about research questions, distinctive themes regarding social and transportation outcomes were identified. Findings of this research supported those of some prior studies while contradicting others, indicating that further exploration is needed to establish a firm understanding of the capabilities of new urban development to achieve desired outcomes, and of regional characteristics that may influence these outcomes.
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Date Issued
2012
Identifier
CFE0004413, ucf:49376
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0004413
Physiological Reactions to Uncanny Stimuli: Substantiation of Self-Assessment and Individual Perception in User Enjoyment and Comfort
Title
Physiological Reactions to Uncanny Stimuli: Substantiation of Self-Assessment and Individual Perception in User Enjoyment and Comfort.
Creator
Ballion, Tatiana, Sims, Valerie, Chin, Matthew, Jones, Donald, University of Central Florida
Abstract / Description
There is abundant anecdotal evidence substantiating Mori's initial observation of the "uncanny valley", a point at which human response to non-human entities drops sharply with respect to comfort (Mori, 1970), and the construct itself has a long-standing history in both Robotics and Psychology. Currently, many fields such as design, training, entertainment, and education make use of heuristic approaches to accommodate the anticipated needs of the user/consumer/audience in certain important...
Show moreThere is abundant anecdotal evidence substantiating Mori's initial observation of the "uncanny valley", a point at which human response to non-human entities drops sharply with respect to comfort (Mori, 1970), and the construct itself has a long-standing history in both Robotics and Psychology. Currently, many fields such as design, training, entertainment, and education make use of heuristic approaches to accommodate the anticipated needs of the user/consumer/audience in certain important aspects. This is due to the lack of empirical substantiation or, in some cases, the impossibility of rigorous quantification; one such area is with respect to the user's experience of uncanniness, a feeling of "eeriness" or "wrongness" when interacting with artefacts or environments. Uncanniness, however, continues to be defined and measured in a largely subjective way, and often after the fact; an experience or product's uncanny features are pointed out after the item has been markedly avoided or complained about by the general public. These studies are among the first seeking to determine a constellation of personality traits and physiological responses that incline the user to have a more frequent or profound (")uncanny" reaction when presented with stimuli meeting the criteria for a level of "eeriness". In study 1, 395 adults were asked to categorize 200 images as uncanny, neutral, pleasant, or other. In Study 2, physiological and eye-tracking data was collected from twenty two adults as they viewed uncanny, neutral and pleasant images culled from study 1. This research identifies components of the uncanny valley related to subjective assessment, personality factors (using the HEXACO and Anthropomorphic Tendencies Scale), and biophysical measures, and found that traits unique to Emotionality on the HEXACO inventory, compounded with a form of anthropomorphism demonstrates a level of relationship to the subjective experience of uncanny stimuli. There is evidence that HEXACO type and forms of anthropomorphic perception mediates the biophysical expression and the subjective perception of the stimuli. In keeping with psychological hypotheses, stimuli to which the participants had greatest response centered on death, the threat of death, or mismatched/absent facial features.
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Date Issued
2012
Identifier
CFE0004354, ucf:49454
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0004354
Facilitating Information Retrieval in Social Media User Interfaces
Title
Facilitating Information Retrieval in Social Media User Interfaces.
Creator
Costello, Anthony, Tang, Yubo, Fiore, Stephen, Goldiez, Brian, University of Central Florida
Abstract / Description
As the amount of computer mediated information (e.g., emails, documents, multi-media) we need to process grows, our need to rapidly sort, organize and store electronic information likewise increases. In order to store information effectively, we must find ways to sort through it and organize it in a manner that facilitates efficient retrieval. The instantaneous and emergent nature of communications across networks like Twitter makes them suitable for discussing events (e.g., natural disasters...
Show moreAs the amount of computer mediated information (e.g., emails, documents, multi-media) we need to process grows, our need to rapidly sort, organize and store electronic information likewise increases. In order to store information effectively, we must find ways to sort through it and organize it in a manner that facilitates efficient retrieval. The instantaneous and emergent nature of communications across networks like Twitter makes them suitable for discussing events (e.g., natural disasters) that are amorphous and prone to rapid changes. It can be difficult for an individual human to filter through and organize the large amounts of information that can pass through these types of social networks when events are unfolding rapidly. A common feature of social networks is the images (e.g., human faces, inanimate objects) that are often used by those who send messages across these networks. Humans have a particularly strong ability to recognize and differentiate between human Faces. This effect may also extend to recalling information associated with each human Face. This study investigated the difference between human Face images, non-human Face images and alphanumeric labels as retrieval cues under different levels of Task Load. Participants were required to recall key pieces of event information as they emerged from a Twitter-style message feed during a simulated natural disaster. A counter-balanced within-subjects design was used for this experiment. Participants were exposed to low, medium and high Task Load while responding to five different types of recall cues: (1) Nickname, (2) Non-Face, (3) Non-Face (&) Nickname, (4) Face and (5) Face (&) Nickname. The task required participants to organize information regarding emergencies (e.g., car accidents) from a Twitter-style message feed. The messages reported various events such as fires occurring around a fictional city. Each message was associated with a different recall cue type, depending on the experimental condition. Following the task, participants were asked to recall the information associated with one of the cues they worked with during the task. Results indicate that under medium and high Task Load, both Non-Face and Face retrieval cues increased recall performance over Nickname alone with Non-Faces resulting in the highest mean recall scores. When comparing medium to high Task Load: Face (&) Nickname and Non-Face significantly outperformed the Face condition. The performance in Non-Face (&) Nickname was significantly better than Face (&) Nickname. No significant difference was found between Non-Faces and Non-Faces (&) Nickname. Subjective Task Load scores indicate that participants experienced lower mental workload when using Non-Face cues than using Nickname or Face cues. Generally, these results indicate that under medium and high Task Load levels, images outperformed alphanumeric nicknames, Non-Face images outperformed Face images, and combining alphanumeric nicknames with images may have offered a significant performance advantage only when the image is that of a Face. Both theoretical and practical design implications are provided from these findings.
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Date Issued
2014
Identifier
CFE0005318, ucf:50524
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0005318