![]() This work also involves the search for biomarkers, particularly genetic polymorphisms, associated with vulnerability or resilience to the impact of sleep deprivation on cognition. The component analysis of cognition has shown that some presumed sleep deprivation induced deficits in cognition, for example, impaired working memory functioning, were not really deficits, but were instead the result of simpler cognitive processes that had not been properly identified and isolated for analysis. We have found that sleep deprivation impairs distinct and separable components of cognitive control, namely, stable and flexible attentional control. My research focuses on the effects of sleep deprivation on cognition. My research examines cognitive control processes that contribute to decision making under constraint. It might not come as much of a surprise to learn that your emotions influence all types of decisions, both big and small. For a judge hearing a parole case, that safer, low-risk option would be to deny parole and keep the prisoner behind bars. Essentially, your affect (a psychological term for emotional response) plays a critical role in the choices and decisions you make. In laboratory studies we use cognitive or affective challenges, such as memory loads and divided attention tasks, to examine how these challenges constrain good decision making. The more decisions we make, the more tired our brain gets, leading us to either give less thought to our decisions or choose lower-risk, safe options simply to avoid the effort of making a difficult decision. People often make decisions under suboptimal conditions, including conditions of distraction, information overload, stress, or fatigue from sleep loss, leading to less than ideal decision outcomes. The primary objective of my research is to better understand how cold cognition (rational or deliberative processes) and hot cognition (affective or emotional processes) contribute to decision making. Areas of InterestĪffective and non-affective factors in decision making, Cognitive control and flexibility, Sleep deprivation effects on cognition Research Scope Affective and Cognitive Influences in Decisions John M.
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