Biological Psychology Commons^™

Mechanisms For Decisions About The Future, Jeffrey R. Stevens

Jeffrey Stevens Publications

Evolutionary and psychological perspectives on decision making remain largely separate endeavors. The bounded rationality approach integrates these two perspectives by focusing on simple, plausible mechanisms of decision making and the cognitive capacities needed to implement these mechanisms. Decisions about the future provide a class of decisions that lend themselves to a bounded rationality approach. Though many different mechanisms may exist for making decisions about the future, only a subset of these mechanisms actually require a representation of the future. The bounded rationality approach helps focus on the cognitive capacities and decision mechanisms that are necessary for a full understanding of …

Attachment: The Antidote To Trauma, Joshua Straub

Faculty Publications and Presentations

Trauma and loss in life are inevitable. And all too often the traumatic experience itself can be enough to paralyze the mental, emotional, and spiritual state of any given person. Unable to interpret the traumatic experience, many instead are left defined by it. Helping clients discern the objective experience and their subjective reactions to it will help free them from the emotions and beliefs that subsequently control their lives. Based on the most relevant attachment theory research and clinical techniques, this workshop teaches the attentional strategies necessary to helping clients overcome trauma.

Diagnosing The Prodromal State Of Alzheimer's Disease, Jennifer Bartkowiak

Honors Scholar Theses

Mild Cognitive Impairment- Amnestic Subtype (MCIa) is a putative prodromal stage of Alzheimer’s Disease (AD) characterized by focal deficits in episodic verbal memory. Less is known about relative deficits in visuospatial learning, although there is ample evidence indicating involvement of the hippocampus in visuospatial learning, as well as hippocampal degeneration in early AD. The aim of this study was to better characterize the components of working memory dysfunction in people with MCIa to increase the ability to reliably diagnose this disease. Fifty-six elderly adults diagnosed with MCIa and 94 healthy elderly completed a hidden maze learning task. Results indicated similar …

Cooperation & Competition Between Navigation Systems In The Rat Brain: The Role Of The Hippocampus And Striatum During A Dissociative Maze Task, Benjamin Gruenbaum

Honors Scholar Theses

While many tend to think of memory systems in the brain as a single process, in reality several experiments have supported multiple dissociations of different forms of learning, such as spatial learning and response learning. In both humans and rats, the hippocampus has long been shown to be specialized in the storage of spatial and contextual memory whereas the striatum is associated with motor responses and habitual behaviors.

Previous studies have examined how damage to hippocampus or striatum has affected the acquisition of either a spatial or response navigation task. However even in a very familiar environment organisms must continuously …

Phonological Facilitation Through Translation In A Bilingual Picture-Naming Task, Paul Amrhein, Aimee Knupsky

Department of Psychology Faculty Scholarship and Creative Works

We present a critical examination of phonological effects in a picture-word interference task. Using a methodology minimizing stimulus repetition, English/Spanish and Spanish/English bilinguals named pictures in either L1 or L2 (blocked contexts) or in both (mixed contexts) while ignoring word distractors in L1 or L2. Distractors were either phonologically related to the picture name (direct; FISH–fist), or related through translation to the picture name (TT; LEG–milk–leche), or they were unrelated (bear–peach). Results demonstrate robust activation of phonological representations by translation equivalents of word distractors. Although both direct and TT distractors facilitated naming, TT facilitation was more consistent in L2 naming …

Discounting And Reciprocity In An Iterated Prisoner’S Dilemma, David W. Stephens, Colleen M. Mclinn, Jeffrey R. Stevens

Jeffrey Stevens Publications

The Iterated Prisoner’s Dilemma (IPD) is a central paradigm in the study of animal cooperation. According to the IPD framework, repeated play (repetition) and reciprocity combine to maintain a cooperative equilibrium. However, experimental studies with animals suggest that cooperative behavior in IPDs is unstable, and some have suggested that strong preferences for immediate benefits (that is, temporal discounting) might explain the fragility of cooperative equilibria. We studied the effects of discounting and strategic reciprocity on cooperation in captive blue jays. Our results demonstrate an interaction between discounting and reciprocity. Blue jays show high stable levels of cooperation in treatments with …

Cognitive And Psychophysiological Investigation Of Chronic Pain, Amy D. Clegg

Loma Linda University Electronic Theses, Dissertations & Projects

Using Bower’s (1981) associative network model of mood and memory, and Klinger’s theory of current concerns, it was hypothesized that the experience of chronic pain may be functionally similar to a mood state and that the chronicity of the condition may maintain it as a current concern. Specifically, it was hypothesized that chronic pain patients would not show any differences in reaction time and accuracy when making lexical decisions about pain-related, neutral, and nonwords. However, it was anticipated that chronic pain patients would show differences in physiological responding (particularly, increased skin conductance responses) when compared to controls. Results confirmed that …

Hemisphere Side Of Damage And Encoding Capacity, Margaret Ellen Davis

Dissertations and Theses

This study was designed to examine whether normal information processing does engage both hemispheres of the brain regardless of sensory channel (i.e., auditory or visual), and whether an opportunity for dual encoding (verbal and visual) was advantageous for patients with unilateral brain damage. It compared memory for verbal material presented in the visual and auditory modalities among three groups: right hemisphere brain damaged stroke patients (RBD), left hemisphere brain damaged stroke patients (LBD), and neurologically intact control subjects.

Only control and LBD subjects benefited from the visual presentation compared with auditory. Controls did generally better on both modes than either …

An Investigation Into The Incidence Of Psychogenic Factors Underlying The Temporomandibular Joint Pain/Dysfunction Syndrome, Ernest William Small

Human Movement Studies & Special Education Theses & Dissertations

No abstract.