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Autobiographical Memory and Theory of Mind in Schizotypy
Title
Autobiographical Memory and Theory of Mind in Schizotypy.
Creator
Deptula, Andrew, Bedwell, Jeffrey, Beidel, Deborah, Sims, Valerie, University of Central Florida
Abstract / Description
Individuals with schizophrenia exhibit marked impairments on tasks assessing theory of mind (ToM) and autobiographical memory (AM) qualities, and preliminary research has indicated a positive link between these abilities. This study is the first to systematically explore this relationship in the related personality trait of schizotypy. In a study of 47 undergraduate students (23 males) reporting a wide continuous range of schizotypy, we found that females, but not males, exhibited a negative...
Show moreIndividuals with schizophrenia exhibit marked impairments on tasks assessing theory of mind (ToM) and autobiographical memory (AM) qualities, and preliminary research has indicated a positive link between these abilities. This study is the first to systematically explore this relationship in the related personality trait of schizotypy. In a study of 47 undergraduate students (23 males) reporting a wide continuous range of schizotypy, we found that females, but not males, exhibited a negative correlation between ToM and schizotypy, and an unexpected positive correlation between AM qualities and schizotypy. Factor score analysis within females indicated that disorganized schizotypy was the strongest correlate of both ToM (i.e., affective ToM; ability to infer emotions), and AM qualities (i.e., mental imagery vividness). Finally, independent of schizotypy and sex, ToM was negatively correlated with AM qualities. This negative association between ToM and AM as well as the positive relationship between schizotypy and AM (in females) distinguish findings in schizotypy from those in schizophrenia. Although, the qualities of AM in schizotypy are relatively unexplored in schizotypy, overlapping and AM-related constructs (e.g., mental image vividness, creativity) are enhanced in schizotypy. This phenomenon is theorized to occur due to a reduced latent inhibition process, which also reveals distinct patterns of sexual dimorphism in schizotypy. In sum, the current study found sex to be a critical variable in each hypothesis, demonstrating a unique pattern in females, but not males. It could be that distinct underlying mechanisms account for sex differences on ToM and AM tasks in schizophrenia-related disorders.
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Date Issued
2013
Identifier
CFE0004671, ucf:49855
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0004671
Cognitive and vascular risk factors for depression: Testing an integrated theoretical framework
Title
Cognitive and vascular risk factors for depression: Testing an integrated theoretical framework.
Creator
Scott, Rosanna, Paulson, Daniel, Rapport, Mark, Dvorak, Robert, Dangiolo, Mariana, University of Central Florida
Abstract / Description
Objective: Theoretical models that have guided the study of later-life depression include the vascular depression hypothesis, depression-executive dysfunction syndrome, and the CaR-FA-X model. Evidence suggests these can be integrated into a single developmental model of disordered mood (and its associated overgeneral memory feature) in later-life to delineate a mechanism of the vascular depression effect and identify modifiable intervention targets.Methods: In older adults, four serial...
Show moreObjective: Theoretical models that have guided the study of later-life depression include the vascular depression hypothesis, depression-executive dysfunction syndrome, and the CaR-FA-X model. Evidence suggests these can be integrated into a single developmental model of disordered mood (and its associated overgeneral memory feature) in later-life to delineate a mechanism of the vascular depression effect and identify modifiable intervention targets.Methods: In older adults, four serial mediation models evaluated the relationships between (1) vascular burden and depressive symptoms via executive control and rumination, and (2) vascular burden and autobiographical memory specificity (AMS) via executive control and rumination. In younger adults, four simple mediation models were conducted to compare results to older adults, including models assessing the relationships between (1) executive control and depressive symptoms via rumination, and (2) executive control and AMS via rumination. Bias-corrected bootstrapping was employed throughout.Results: Older adult n=56; younger adult n=63. Older adult serial mediation models demonstrated significant individual relationships between a working memory measure and depressive symptoms, as well as between rumination and depressive symptoms. The vascular depression effect neared significance. No other direct or indirect effects were supported. In younger adults, rumination was significantly associated with depressive symptoms; all other hypothesized relationships were not significant.Conclusions: Model 1, evaluating the impact of vascular burden on depressive symptoms in older adults via working memory and rumination, respectively, was the most effective in integrating vascular depression, DED, and CaR-FA-X. However, there was not support for a vascular depression mechanism. Null results in this sample could be attributable to inadequate power or measurement error. Clinically, results promote interventions that target older adults presenting with depression, executive dysfunction, or rumination, independently or combined.
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Date Issued
2019
Identifier
CFE0007860, ucf:52759
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0007860
Potential Relationship Between Vascular Depression and Autobiographical Memory Specificity in an Older Adult Population According to the CaR-FA-X Model
Title
Potential Relationship Between Vascular Depression and Autobiographical Memory Specificity in an Older Adult Population According to the CaR-FA-X Model.
Creator
Herrera Legon, Manuel, Paulson, Daniel, Rapport, Mark, Sims, Valerie, University of Central Florida
Abstract / Description
Vascular depression is a type of depression that has its onset later in life, and it has been associated with cardiovascular or metabolic diseases. Depression can be costly and associated with other health problems, which is why it becomes imperative to uncover the multiple mechanisms of action for depression symptomatology. A proposed mechanism of action for the emergence of depressive symptomatology is poor autobiographical memory specificity according to the CaR-FA-X model. However, it...
Show moreVascular depression is a type of depression that has its onset later in life, and it has been associated with cardiovascular or metabolic diseases. Depression can be costly and associated with other health problems, which is why it becomes imperative to uncover the multiple mechanisms of action for depression symptomatology. A proposed mechanism of action for the emergence of depressive symptomatology is poor autobiographical memory specificity according to the CaR-FA-X model. However, it remains unclear whether this mechanism contributes somehow to the vascular depression specific type. The purpose of this research was to determine the potential relationship between the mechanisms proposed by the CaR-FA-X model and the presence of vascular depression, which has not been addressed by previous literature or research. Forty three older adults over the age of seventy from the Orlando area completed multiple measures including the Geriatric Depression Scale, Autobiographical Memory Test, and physiological measures. Results showed no support for a relationship between CaR-FA-X model elements and vascular depression; however, support was found for the relationship between cerebrovascular burden and depression as proposed by the vascular depression theory with rumination serving as a moderator. To our knowledge, this is the first time a study finds the moderating effect of rumination in the development of vascular depression. Further studies will need to address other potential mechanisms that increase risk for this specific type of depression as well as investigate the reasons under which, if any, autobiographical memory specificity might be related to vascular depression by using other measures that might be more sensitive to a non-clinical population.
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Date Issued
2018
Identifier
CFE0007014, ucf:52041
Format
Document (PDF)
PURL
http://purl.flvc.org/ucf/fd/CFE0007014