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Articles 331 - 355 of 355

Full-Text Articles in Cognitive Psychology

Multidimensional Self-Efficacy And Affect In Wheelchair Basketball Players, Jeffrey J. Martin Oct 2008

Multidimensional Self-Efficacy And Affect In Wheelchair Basketball Players, Jeffrey J. Martin

Kinesiology, Health and Sport Studies

In the current study, variables grounded in social cognitive theory with athletes with disabilities were examined. Performance, training, resiliency, and thought control self-efficacy, and positive (PA) and negative (NA) affect were examined with wheelchair basketball athletes (N = 79). Consistent with social cognitive theory, weak to strong significant relationships among the four types of self-efficacy (rs = .22–.78) and among self-efficacy and affect (rs = -.40–.29) were found. Basketball players who were efficacious in their ability to overcome training barriers were also confident in their basketball skills and efficacious in their ability to overcome ruminating distressing thoughts …


Examining Neurophysiological Evidence Of Age-Related Interactions Of Sensory And Cognitive Processes During Speech Processing, Cady Kristen Block Oct 2008

Examining Neurophysiological Evidence Of Age-Related Interactions Of Sensory And Cognitive Processes During Speech Processing, Cady Kristen Block

Psychology Theses & Dissertations

The present study sought to examine the contribution of sensory and cognitive factors on speech processing as evidenced by ERP measures and to find support for the Sensory Cognitive Interaction Theory (SCIT) and the Effortfulness Hypothesis in that older adults. who experience sensory deficits with normal aging. must put forth increased effort during early sensory stages of speech processing that may compromise subsequent semantic performance and recall of information. In the present investigation. younger and older adults performed a sentence verification task at low and high presentation levels (PL). Accuracy and response time to sentence verifications were assessed along with …


Factors That Affect Performance On Executive Functioning After Coronary Artery Bypass Grafting, Sapna Mahesh Patel Jun 2008

Factors That Affect Performance On Executive Functioning After Coronary Artery Bypass Grafting, Sapna Mahesh Patel

Loma Linda University Electronic Theses, Dissertations & Projects

Research suggests that individuals who undergo coronary artery bypass grafting (CABG) experience declines in neuropsychological functioning post-operatively. This decline has been observed in up to 80% of patients early after surgery, and in up to 30% of patients after six months. Many studies have examined the potential effects of CABG on neuropsychological functioning in general, and numerous studies have found that executive functions are impaired in particular. However, none have examined what factors contribute to observed executive dysfunction after CABG. This study investigated the role of memory functions on executive functions in a selected sample of patients undergoing CABG. This …


Psycho-Social Effects Of A Brain-Training Program Among Healthy Older Adults, Desma Hurley, M. Jean Turner, William C. Bailey Jan 2008

Psycho-Social Effects Of A Brain-Training Program Among Healthy Older Adults, Desma Hurley, M. Jean Turner, William C. Bailey

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Grounded in cognitive neuroscience and social exchange theory, this research evaluated the relationship between changes in cognitive functioning and two psycho-social dimensions of life among healthy adults over the age of 70 (N=12). Specific psycho-social dimensions examined were social interaction and depression. Six females and six males participated in the study. All were white, college-educated individuals residing in a life-care residential retirement community. The participants used the Posit Science® Brain Fitness Program™, an auditory-based computer training program that improves memory and speed of processing, for forty hours over an eight-week period. Pre- and post-tests related to social interaction and depressive …


Divisions Within The Posterior Parietal Cortex Help Touch Meet Vision, Catherine L. Reed Apr 2007

Divisions Within The Posterior Parietal Cortex Help Touch Meet Vision, Catherine L. Reed

CMC Faculty Publications and Research

The parietal cortex is divided into two major functional regions: the anterior parietal cortex that includes primary somatosensory cortex, and the posterior parietal cortex (PPC) that includes the rest of the parietal lobe. The PPC contains multiple representations of space. In Dijkerman and de Haan’s (see record 2007-13802-022) model, higher spatial representations are separate from PPC functions. This model should be developed further so that the functions of the somatosensory system are integrated with specific functions within the PPC and higher spatial representations. Through this further specification of the model, one can make better predictions regarding functional interactions between somatosensory …


Maintenance Of Visual Stability In The Human Posterior Parietal Cortex, Erik Chang, Tony Ro Feb 2007

Maintenance Of Visual Stability In The Human Posterior Parietal Cortex, Erik Chang, Tony Ro

Publications and Research

Visual stability refers to our stable visuospatial perceptions despite the unstable visual input caused by saccades. Functional neuroimaging results, studies on patients with posterior parietal cortex (PPC) lesions, and single-unit recordings in the lateral intraparietal sulcus of primates indirectly suggest that the PPC might be a potential locus of visual stability through its involvement with spatial remapping. Here we directly explored the role of the PPC in visual stability by applying transcranial magnetic stimulation (TMS) while participants performed a perisaccadic displacement detection task. We show that TMS over the PPC but not a frontal control site alters sensitivity to displacement …


Aged Rats: Sex Differences And Responses To Chronic Stress, Rachel E. Bowman, Neil J. Maclusky, Samantha Diaz-Weinstein, Mark C. Zrull, Victoria N. Luine Dec 2006

Aged Rats: Sex Differences And Responses To Chronic Stress, Rachel E. Bowman, Neil J. Maclusky, Samantha Diaz-Weinstein, Mark C. Zrull, Victoria N. Luine

Psychology Faculty Publications

Cognitive, as well as physiological, sex differences exist in young adult rats under both basal conditions and following chronic stress; however, few studies have examined whether sex differences remain in aged subjects and whether responses to stress are altered. We compared aged male and female Fischer 344 rats (21.5 months at testing) without stress and when given 21 days of restraint for 6 h/day on locomotion, anxiety-related behaviors, object recognition (non-spatial memory), object placement (spatial memory), body weight and serum steroid hormone levels. Control (unstressed) females had lower levels of estradiol and testosterone and higher corticosterone than males, and stress …


A Social Cognitive Perspective Of Physical-Activity-Related Behavior In Physical Education, Jeffrey J. Martin, Pamela Hodges Kulinna Jul 2005

A Social Cognitive Perspective Of Physical-Activity-Related Behavior In Physical Education, Jeffrey J. Martin, Pamela Hodges Kulinna

Kinesiology, Health and Sport Studies

The purpose of the current study was to examine student and teacher physical-activity-related behavior using the theory of planned behavior and self-efficacy theory. Although teachers reported an overwhelmingly positive attitude toward teaching physical activity lessons to promote fitness development, they only devoted 4% of their class time to actually demonstrating and promoting fitness. Students were quite sedentary during class spending 61% of class time sitting, standing, or lying down. Using hierarchical regression analyses, teachers' attitudes toward teaching physically active physical education classes accounted for 50% of the variance in teachers' intention. Teachers who demonstrated/promoted fitness and who limited their general …


Theta Activity During Navigation In Virtual Environments, Colleen Margaret Moore Jul 2005

Theta Activity During Navigation In Virtual Environments, Colleen Margaret Moore

Psychology Theses & Dissertations

Human navigation has gone through many different stages, from guidance by stars to guidance by technology. Theories for performance differences range from differences between individuals, to experience with the environment. Researchers turn to virtual environments during experimentation which are easy to manipulate and easier to measure during navigation. However, fidelity is an issue with regard to transfer of learning to a real world environment. We examined differences in theta activity during navigation in low and high fidelity virtual environments. The researchers recruited thirty-two students between the ages of 18-40 from the university subject pool for voluntary participation. We measured EEG …


Using Distributed Network Systems To Model Perception With An Artificial Neural Network, Tide Kansona Takizala Dec 2004

Using Distributed Network Systems To Model Perception With An Artificial Neural Network, Tide Kansona Takizala

All-Inclusive List of Electronic Theses and Dissertations

It is difficult to be certain about brain functioning. Until now, most efforts to understand brain computations have only been conducted on a stand alone computer. In order to recreate the brain accurately, members of the Institute of Cognitive Computing Technology (ICCT) were interested in finding out whether or not a biological process could be simulated on a Distributed Artificial Neural Network (DANN). The goal of this investigation was to implement visual perception on a network of computers and compare the computations of the network with those of a human brain. The distributed network was developed as a Local Area …


Event-Related Potential Evidence For Multiple Causes Of The Revelation Effect, P. Andrew Leynes, Joshua Landau, Jessica Walker, Richard J. Addante Oct 2004

Event-Related Potential Evidence For Multiple Causes Of The Revelation Effect, P. Andrew Leynes, Joshua Landau, Jessica Walker, Richard J. Addante

Psychology Faculty Publications

Asking people to discover the identity of a recognition test probe immediately before making a recognition judgment increases the probability of an old judgment. To inform theories of this “revelation effect,” event-related potentials (ERPs) were recorded for revealed and intact test items across two experiments. In Experiment 1, we used a revelation effect paradigm where half of the test probes were presented as anagrams (i.e., a related task) and the other items were presented intact. The pattern of ERP results from this experiment suggested that revealing an item decreases initial familiarity levels and caused the revealed items to elicit similar …


The Development Of A Physical Education Teachers' Physical Activity Self-Efficacy Instrument, Jeffrey J. Martin, Pamela Hodges Kulinna Apr 2003

The Development Of A Physical Education Teachers' Physical Activity Self-Efficacy Instrument, Jeffrey J. Martin, Pamela Hodges Kulinna

Kinesiology, Health and Sport Studies

In the present investigation a questionnaire was developed to assess physical education teachers' self-efficacy for teaching classes in which their students were engaged in high levels of physical activity (i.e., at least 50% of class time). Exploratory and confirmatory factor analyses resulted in the development of a 16-item, 4-factor, multidimensional physical education teachers' physical activity self-efficacy scale (PETPAS) that produced reliable and valid scores. The Student factor reflected teachers' efficacy for managing students who didn't enjoy or value physical activity. The Time factor was indicative of teachers' efficacy when they didn't have enough time to teach. The Space factor reflected …


Training And Performance Self-Efficacy, Affect, And Performance In Wheelchair Road Racers, Jeffrey J. Martin Oct 2002

Training And Performance Self-Efficacy, Affect, And Performance In Wheelchair Road Racers, Jeffrey J. Martin

Kinesiology, Health and Sport Studies

In the current study, social cognitive theory was examined with athletes with disabilities. More specifically, hierarchical and self-regulatory performance self-efficacy, self-regulatory training self-efficacy, outcome confidence, and affect were examined with wheelchair road racers (N = 51). In accordance with social cognitive theory, moderate to strong significant relationships among 3 types of self-efficacy and outcome confidence were found (rs = .41 - .78). All forms of self-efficacy and positive affect (rs = .39 - .56) were also related providing additional support to social cognitive theory and the important relationships among training and performance related efficacy and affect in …


Cognitive Ethology And The Cost Of Anthropomorphiphobia, Robert H.I. Dale Jan 2002

Cognitive Ethology And The Cost Of Anthropomorphiphobia, Robert H.I. Dale

Scholarship and Professional Work - LAS

Book review for the following titles:

Animal Minds: Beyond Cognition to Consciousness. By Donald R. Griffin, Chicago: University of Chicago Press, 2001, 376 pages. $27.50 softcover

The Smile of a Dolphin: Remarkable Accounts of Animal Emotions. Edited by Marc Bekoff, New York: Discovery Books, 2000, 240 pages. $35.00 hardcover

Minds of Their Own: Thinking and Awareness in Animals. By Lesley J. Rogers, Boulder, CO: Westview Press, 1998, 224 pages. $19.00 softcover


Discounting And Reciprocity In An Iterated Prisoner’S Dilemma, David W. Stephens, Colleen M. Mclinn, Jeffrey R. Stevens Jan 2002

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 …


Age Differences In Behavior And Pet Activation Reveal Differences In Interference Resolution In Verbal Working Memory, Alan Hartley, John Jonides, Christina Marshuetz, Edward E. Smith, Patricia A. Reuter-Lorenz, Robert A. Koeppe Jan 2000

Age Differences In Behavior And Pet Activation Reveal Differences In Interference Resolution In Verbal Working Memory, Alan Hartley, John Jonides, Christina Marshuetz, Edward E. Smith, Patricia A. Reuter-Lorenz, Robert A. Koeppe

Scripps Faculty Publications and Research

Older adults were tested on a verbal working memory task that used the item-recognition paradigm. On some trials of this task, response-conflict was created by presenting test-items that were familiar but were not members of a current set of items stored in memory. These items required a negative response, but their familiarity biased subjects toward a positive response. Younger subjects show an interference effect on such trials, and this interference is accompanied by activation of a region of left lateral prefrontal cortex. However, there has been no evidence that the activation in this region is causally related to the interference …


Age Differences In The Frontal Lateralization Of Verbal And Spatial Working Memory Revealed By Pet, Alan Hartley, Patricia A. Reuter-Lorenz, John Jonides, Edward E. Smith, Andrea Miller, Christina Marshuetz, Robert A. Koeppe Jan 2000

Age Differences In The Frontal Lateralization Of Verbal And Spatial Working Memory Revealed By Pet, Alan Hartley, Patricia A. Reuter-Lorenz, John Jonides, Edward E. Smith, Andrea Miller, Christina Marshuetz, Robert A. Koeppe

Scripps Faculty Publications and Research

Age-related decline in working memory figures prominently in theories of cognitive aging. However, the effects of aging on the neural substrate of working memory are largely unknown. Positron emission tomography (PET) was used to investigate verbal and spatial short-term storage (3 sec) in older and younger adults. Previous investigations with younger subjects performing these same tasks have revealed asymmetries in the lateral organization of verbal and spatial working memory. Using volume of interest (VOI) analyses that specifically compared activation at sites identified with working memory to their homologous twin in the opposite hemisphere, we show pronounced age differences in this …


Evidence For Common Coding Of Temporal And Nontemporal Information In Pigeons, Stephen Bridson Jan 1990

Evidence For Common Coding Of Temporal And Nontemporal Information In Pigeons, Stephen Bridson

Theses and Dissertations (Comprehensive)

Two experiments found evidence that pigeons commonly code temporal and visual samples that are associated with the same comparisons in many-to-one matching. In Experiment 1, pigeons were trained to match temporal (2-sec and 8-sec keylight durations) and color (red and green) samples to line tilt comparisons (vertical and horizontal). Similar rates of forgetting were found for all samples. Furthermore, retention of sample information appeared more similar for samples which shared common comparisons than those that did not. In Experiment 2, pigeons learned new comparison (circle and triangle) associations with either temporal or visual samples from Experiment 1. When tested on …


Similarities Between Human And Animal Spatial Memory: Item And Order Information, Robert H.I. Dale Sep 1987

Similarities Between Human And Animal Spatial Memory: Item And Order Information, Robert H.I. Dale

Scholarship and Professional Work - LAS

Human subjects, sitting at the center of a circle of eight lights, were tested on analogues of radial-maze item-recognition (Roberts & Smythe, 1979) and order-recognition (Kesner & Novak, 1982) tasks. Subjects in the item-recognition condition saw a list of seven lights, and then the nonlist (eighth) light was tested against the first, fourth, or seventh light from the list. The sub- jects were required to point toward the non list light. Subjects in the order-recognition condition saw a series of eight lights, followed by a test of the first and second, fourth and fifth, or seventh and eighth serial positions. …


Task Load, Stimulus Encodability, Test Latency, And Processing Efficiency Effects On The Visual Recognition Memory Of The Chronic Neuropsychologically Impaired, Thomas W. C. Blash Aug 1987

Task Load, Stimulus Encodability, Test Latency, And Processing Efficiency Effects On The Visual Recognition Memory Of The Chronic Neuropsychologically Impaired, Thomas W. C. Blash

All-Inclusive List of Electronic Theses and Dissertations

Psychologists assessing the visual recognition memory (VRM) of neuropsychologically compromised clients with the dual diagnosis of cognitive impairment and emotional sequelae confront two problems, including the dearth of studies dealing with the dually diagnosed (Menolascino, 1984) and inconsistent findings from past research on the effects of cerebral compromise on visual memory (Boller & DeRenzi, 1967; Cremonini, DeRenzi, & Faglioni, 1980; DeRenzi & Spinnler, 1966; DeRenzi, Faglioni, & Villa, 1977; Gouvier, 1983; Kimura, 1963). This study examines the effects of task load (number of stimuli), stimulus encodability, test latency, and cognitive processing efficiency on a group of dually diagnosed individuals who …


Stimulus Control Exerted By Remember Cues Over Processing In Pigeons’ Short-Term Memory, Patricia E. Hernandez Torres Jan 1982

Stimulus Control Exerted By Remember Cues Over Processing In Pigeons’ Short-Term Memory, Patricia E. Hernandez Torres

Theses and Dissertations (Comprehensive)

The aim of the present research was to provide further evidence regarding the role of remember cues on pigeon short-term memory. The first two experiments were conducted to determine whether, using a single cuing procedure, control over delayed matching-to-sample (DMTS) performance could be demonstrated by establishing a no cue condition as an implicit cue to forget. In Experiment 1, subjects were provided with training in a procedure where both forget cue (F) and no cues indicated the omission of the comparison stimuli at the end of the delay interval. In Experiment 2, naive subjects were trained with remember (R) and …


Pigeon Short-Term Memory: The Effects Of Intertrial Interval Duration And Illumination In A Successive Delayed Matching-To-Sample Procedure, Vic Grossi Jan 1981

Pigeon Short-Term Memory: The Effects Of Intertrial Interval Duration And Illumination In A Successive Delayed Matching-To-Sample Procedure, Vic Grossi

Theses and Dissertations (Comprehensive)

The aim of this research was to examine the effects of illumination and intertrial interval duration on pigeon short-term memory, using a successive matching-to-sample procedure. In phrase one the retention interval was manipulated individually for each bird. During the second phase, a correction procedure was implemented in order to reduce the number of responses made to non-match comparison stimuli. In the third phase, the birds were returned to a common baseline, in order to observe what effect elimination of the correction procedure had on the bird’s performance. In the final phase of the research, after achieving stable performance in the …


Material-Specific Processes In Tactile Short-Term Memory, Christina Anne Meyers May 1978

Material-Specific Processes In Tactile Short-Term Memory, Christina Anne Meyers

Dissertations and Theses

Studies concerning tactile short-term memory (short-term memory or the sense of touch) have often been contradictory. Some of these studies support the existence of modality-specific tactile memory, a separate, independent storage system for tactile information. Other studies do not support such a system. Further, confusion has arisen regarding the tactile test materials, since many of them use common shapes which are easily labeled verbally. It is hypothesized that information which can be labeled is stored in material-specific verbal memory in the left hemisphere, while patterned or spatial information is stored in material-specific nonverbal memory in the right hemisphere.

This paper …


State-Dependent Learning With Caffeine, Barbara A. Cooper Jan 1974

State-Dependent Learning With Caffeine, Barbara A. Cooper

Theses, Dissertations and Capstones

Introduction

  • The study investigates state-dependent (SD) learning, where performance is influenced by the drug state during learning.
  • Caffeine, a central nervous system (CNS) stimulant, is the focus, with high doses administered to subjects.
  • The research aims to determine if caffeine can serve as a discriminative stimulus in a T-maze shock escape task.

Method

  • Subjects: 20 naive male albino rats, selected based on activity levels.
  • Experimental design involved two groups: one receiving caffeine and the other saline.
  • The T-maze apparatus was used for training and testing, with specific dimensions and shock delivery mechanisms.

Procedure

  • A 30-minute free exploration period was conducted …


Molecular Transfer Of Acquired Discrimination By Proteinaceous Extract, Robert L. Sayre Jan 1969

Molecular Transfer Of Acquired Discrimination By Proteinaceous Extract, Robert L. Sayre

Theses, Dissertations and Capstones

Early investigators of the molecular basis of memory suggested a unique function for the nucleic acids in learning and memory, with base changes in RNA being the most popular mechanism in representing memory for experiential events. Subsequent research has led to the hypothesis that RNA is intermediary in the general action of cells, but some researchers continue to think of RNA as providing a unique contribution during learning.