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Cortical Localization Of Handedness In The Rat, Luther W. Rook

Psychology ETDs

This study is a continuation of the Peterson handedness studies. Basically, these studies seek a means to investigate the nature of the neural equivalent of practice. Many investigators are interested in this problem, among them the conditioned reflexologists. They, however, have failed to identify any neural equivalent because they have failed to localize a conditioned reflex...

It should be emphasized that the primary concern of this and previous handedness studies is not with handedness per se. Handedness is a highly useful and sensitive means of determining the functionality of a small part of the nervous system. The objective of …

The Production Of Voluntary Response Gradients Of Stimulus Generalization In The Absence Of Reinforced Discrimination Learning, Donald T. Tosti

Psychology ETDs

The experiments reported in this paper were performed to test the hypothesis that stimulus generalization with voluntary responses can be shown in the absence of reinforced stimulus discrimination. There are two important distinctions which together differentiate these experiments from most of the previous studies in this area.

First, the methods utilized here require no discrimination between stimuli during acquisition of the response; i.e., S does not discriminate between the CS and test stimuli during acquisition. In contrast, the majority of studies of stimulus generalization with human S's employing voluntary responses have contained this problem, which is not present in …

The Judgment Of Intelligence From Photographs, Charlene Diver Fredenburgh

Psychology ETDs

Between 1918 and 1933 several studies appeared in which the ability of a person to make judgments of intelligence from photographs was assessed. The topic has not been pursued since then, despite the inadequacies of these early studies. These investigations found that, on the average, the ability of individuals to judge the Intelligence of pictured persons is either nonexistent or low.

Methods To Control Small Cerebral Destructions That Will Produce Transfers In Handedness In The Rat, Ronda Fink Hunter

Psychology ETDs

The object of this investigation was to answer the following questions: (1) Which layers of the cortex are involved in all transfers regardless of the method of destruction?; (2) Is there any advantage in producing a destruction which leaves the upper layers of the cortex intact?; (3) Which method of destruction allows more control of size of destruction?; (4) Does electrical stimulation contribute to localizing the region controlling the function of handedness?; (5) Do ambidextrous rats transfer with significantly smaller destructions than single handed rats?; (6) Are there significant differences between methods with respect to size or effect of destruction …