Browsing by Author "Smith, Elizabeth A."

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    Compared to high and low cannabis use, moderate use is associated with fewer cognitive deficits in psychosis
    (Elsevier, 2016-12) Martin, Ashley M. Schnakenberg; Bonfils, Kelsey A.; Davis, Beshaun J.; Smith, Elizabeth A.; Schuder, Kelly; Lysaker, Paul H.; Department of Psychiatry, IU School of Medicine
    Literature on the relationship of cannabis use and cognition in schizophrenia provides the paradoxical view that cannabis use is sometimes linked with less severe impairment in neurocognition. This paper explored the possibility that this is a reflection of a dose related response between lifetime cannabis use and two forms of cognition, neurocognition and metacognition, in schizophrenia. It was hypothesized that three groups of patients could be differentiated, those with (1) little to no cannabis use with poor levels of cognition, (2) moderate cannabis use and relatively better levels of cognition and (3) high cannabis use with relatively poorer levels of cognition. Sixty-six adults with schizophrenia completed assessments of neurocognition, metacognition and months of lifetime cannabis use. A k-means cluster analysis yielded three distinct groups based on these assessments. The clusters included: (1) low cannabis/poor cognition (n = 34); (2) heavy cannabis/moderately impaired cognition (n = 10); and (3) moderate cannabis/higher cognition (n = 22). Consistent with our hypothesis, participants with high and moderate lifetime cannabis use had lesser impairment of neurocognition and metacognition compared to low lifetime cannabis use. Participants with moderate lifetime cannabis use also had lesser impairment of metacognition compared to low and heavy use. These findings suggest that a dose related relationship exists between cannabis use and cognition. Results could be due to an influence of pre-existing cognitive level on likelihood of lifetime cannabis use, or to an interaction between use and cognitive function.
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    Personal Narratives in Trauma-Related Disorders: Contributions from a Metacognitive Approach and Treatment Considerations
    (MDPI, 2025-01-30) Wiesepape, Courtney N.; Smith, Elizabeth A.; Muth, Andrew J.; Faith, Laura A.; Psychology, School of Science
    Traumatic experiences are significant life events that are thought to impact one's personal life narrative and narrative identity. Individuals who have experienced trauma may display fragmented memories and decreased narrative cohesion, resulting in trauma narratives that are disjointed and poorly integrated into the larger picture of their lives. Metacognition, defined as the ability to form increasingly complex and integrated ideas about the self, others, and the wider world, offers a framework to better understand life narratives and has been proposed as a construct that allows personal narratives to evolve in response to new experiences. In this paper, we will review the alterations commonly observed in trauma narratives. We will utilize the integrated model of metacognition as a framework to understand these deviations with an eye toward clinical implications. Although treatments that focus on trauma narratives exist, we argue that the study of metacognition provides unique insights into the process of integration of traumatic experience into an evolving personal narrative and may allow for more complete treatment of trauma-related disorders.