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Full-Text Articles in Psychology

The Effects Of Deprivation Techniques On Body Weight & Propensity To Perform An Operant, Herb Chapman May 1976

The Effects Of Deprivation Techniques On Body Weight & Propensity To Perform An Operant, Herb Chapman

Masters Theses & Specialist Projects

Eighteen rats were divided into equal groups which received three different food deprivation procedures: 23 hour deprivation, maintenance at 80% of pre-experimental weights, or fixed daily food allotments of 10 grams. The rats were then given two training sessions with an unearned food source and 15 training sessions earning an identical food source by pressing a lever. Training was followed by three days of choice testing. There were no significant differences between groups in preference for earned rewards during choice testing in degrees of weight loss. However, a correlation comparing propensity to work for pellets with body weight deficit over …


The Effects Of A Drug-Induced Stress On The Contrafreeloading Phenomenon In Rats, Jeanne Bennett Jan 1976

The Effects Of A Drug-Induced Stress On The Contrafreeloading Phenomenon In Rats, Jeanne Bennett

Masters Theses & Specialist Projects

The purpose of this experiment was to determine if stress, induced by intraperitoneal (IP) injections of epinephrine, influenced rats' preference to freeload (drink sucrose solution from a drinking tube) or to work for a liquid reinforcer (obtain sucrose solution by barpressing). Furthermore, the order in which stress was introduced was investigated.

Following two weeks of water deprivation, 6 female and 6 male Hooded rats approximately 90 days old were divided into two experimental groups. The first group (S-N) was stressed the first and second experimental testing days in which a choice was presented between barpressing and freeloading for a 10% …


The Effects Of Manipulation Of Examination Results On Locus Of Control Beliefs, Douglas Doyle Jul 1975

The Effects Of Manipulation Of Examination Results On Locus Of Control Beliefs, Douglas Doyle

Masters Theses & Specialist Projects

The present study investigated the effects of manipulated feedback concerning examination performance on locus of control beliefs. Brecher and Denmark (1972) found that students given manipulated feedback concerning results of a recent examination exhibited a significant increase in their I-E scores. In the present study, 84 students enrolled in one of three classes of a lower level, undergraduate Psychology course at Western Kentucky University, taught by the same instructor, were used as subjects. These subjects were administered the I-E Scale and about one month later took a regularly scheduled examination over course material. The first clans session after the exam, …


The Effects Of A Social Stimulus On The Protestant Ethic Effect In Rats, Gary L. Cotton May 1975

The Effects Of A Social Stimulus On The Protestant Ethic Effect In Rats, Gary L. Cotton

Masters Theses & Specialist Projects

The purpose of this experiment was to determine whether rats’ preference to freeload (eat food pellets from a food cup) or to work for food (obtain food pellets by bar pressing) could be influenced by observing either a working or freeloading model in an adjacent operant chamber.

Following equal amounts of bar press and freeloading training, 18 male Sprague-Dawley rats approximately 100 days cold were divided into three experimental groups. The first group was permitted to view a working model while being presented a choice between bar pressing and free-loading. A second experimental group was exposed to a freeloading model …


A Concurrent Validity Study Of The Acting Out Score Of The Hand Test, Arthur Dosch Mar 1975

A Concurrent Validity Study Of The Acting Out Score Of The Hand Test, Arthur Dosch

Masters Theses & Specialist Projects

In an investigation of the concurrent validity of the Acting Out Score (AOS) of the Hand Test, the AOSs of 32 normal college students were compared with the scores they obtained on two clinically popular self-report criterion measures of hostility and aggression, the Buss-Durkee (BD) and the Hostility and Direction of Hostility Questionnaire (HDHQ). The AOS did not significantly differentiate between high and low scoring groups on either the HDHQ or BD although both criterion measures were found to be significantly related.


The Role Of Extraversion & Intraversion On The Performance Of An Abstract Reasoning Task, Clarkie Farley Jun 1972

The Role Of Extraversion & Intraversion On The Performance Of An Abstract Reasoning Task, Clarkie Farley

Masters Theses & Specialist Projects

This research compares the performance of a group of extraverts to a group of intraverts on a cognitive reasoning task. According to the theory of Hans J. Eysenck, one would expect that the intraverts would perform better than the extraverts on a task of massed reasoning. On the basis of scores on the Eysenck Personality Inventory and the Otis Lennon Mental Ability Test, a sample of 72 Ss were drawn from two undergraduate classes, Principles of Applied Learning and Human Development, at Western Kentucky University. Only Ss with extreme scores on the Extraversion scale E were selected, with each extravert …