Other Psychology Commons^™

Aging And The Restructuring Of Precued Movements, Paul Amrhein, George Stelmach, Noreen Goggin

Department of Psychology Faculty Scholarship and Creative Works

A precue paradigm was used to examine the time it takes to restructure a planned motor response. Two groups of subjects, a young group, and an elderly group, performed an aiming task in which 75% of the trials involved no change of movement parameters. On remaining trials, subjects had to change one or more of the movement parameters. Elderly subjects had slower reaction times (RTs), movement times, and made more errors in both conditions. Elderly subjects had proportionally longer RTs overall, independent of restructuring a movement plan. Preparation of arm and direction also exhibited a proportional increase in RT. However, …

Age Differences In Bimanual Coordination, Paul Amrhein, George Stelmach, Noreen Goggin

Department of Psychology Faculty Scholarship and Creative Works

A bimanual coordination experiment was conducted in which two groups of 10 male and female participants, elderly (67 to 75 years of age) and young (21 to 25 years of age), produced unimanual, bimanual symmetrical (equal extent amplitude), and bimanual asymmetrical (unequal extent amplitude) movements. In addition to an overall increase in performance latency, the elderly group exhibited a linear increase in response initiation (RT) with increases in task complexity similar to that of the young group. However, the elderly participants showed a proportional increase over the young participants in response execution latency (MT). Further, the elderly group had a …

0482: Dr. Walter Freeman's Papers From Huntington State Hospital, 1897-1984, Marshall University Special Collections

Guides to Manuscript Collections

Please note: this collection does not contain individual patient hospital records or records about individuals who stayed here. The items in this collection come from a specific doctor who worked here and his research.

This collection consists of historical materials from the Huntington State Hospital during the period 1897 through 1984. The collection includes correspondence of hospital personnel and patients, administrative records, newspaper clippings, and a large number of photographs. Significant to the collection are files relating to transorbital lobotomies performed by Dr. Walter Freeman in the early 1950's as part of a larger lobotomy project in West Virginia. The …

A Profile Analysis Of The Scl-90-R For Aggressive And Nonaggressive Adolescents With Conduct Disorder : A Comparison Of Aggression And Nonaggression In Relationship To Psychoticism And Depression, Hostility And Anxiety, Janet M. Rice

Dissertations

Problem. Dissatisfaction with the DSM-III classification of conduct disorder has led the editors of the DSM-III-R to group the socialized and undersocialized, aggressive and the undersocialized, nonaggressive conduct-disorderd youth together in the same category (Solitary Aggressive Type). However, the symptoms and behavior of aggressive and nonaggressive youth are so diverse, they should be placed in totally separate categories. The implications of misdiagnosis are serious for rehabilitation and treatment.

Method. One hundred-thirty male adolescents labeled aggressive and nonaggressive conduct-disordered were administered the SCL-90-R. The Chi-square test determined what percentage in each group scored at the 70th percentile or above in the …

Effects Of Alternative Reinforcement Sources: A Reevaluation, Abdulrazaq A. Imam, K A. Lattal

Abdulrazaq A. Imam

The effects of two alternative sources of food delivery on the key-peck responding of pigeons were examined. Pecking was maintained by a variable-interval 3-min schedule. In the presence of this schedule in different conditions, either a variable-time 3-min schedule delivering food independently of responding or an equivalent schedule that required a minimum 2-s pause between a key peck and food delivery (a differential-reinforcement-of-other-behavior schedule) was added. The differential-reinforcement-of-other-behavior schedule reduced response rates more than did the variable-time schedule in most instances. The delay between a key peck and the next reinforcer consistently was longer under the differential-reinforcement-of-other-behavior schedule than under …