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Articles 31 - 36 of 36

Full-Text Articles in Experimental Analysis of Behavior

A Comparison On The State Dependent Effects Of Electroconvulsive Shock And Physostigmine On A Choice Task, Candace Susanne Brown Jan 1974

A Comparison On The State Dependent Effects Of Electroconvulsive Shock And Physostigmine On A Choice Task, Candace Susanne Brown

All Master's Theses

Two experiments compared the state-dependent effects of electroconvulsive shock (ECS) and physostigmine relative to a normal state (saline or no injection). Rats were trained in a water T maze using a discrimination-training paradigm. In Experiment 1, discrimination was found between the ECS- and normal state. However, response control was strongest in the ECS-0 treatment-training order and on non-ECS training sessions. In Experiment 2, dissociation also occurred but was more pronounced in the P-0 (physostigmine-saline) treatment-training order and on the saline training sessions. Results from both experiments indicate learning is most rapid in the treatment-no treatment training order and that a …

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The Role Of Memory In Rule Learning Problems, Alan S. Kertes Jan 1974

The Role Of Memory In Rule Learning Problems, Alan S. Kertes

All Master's Theses

Thirty-six college subjects who had taken a memory test from the Wechsler series were chosen from an introductory psychology class and divided into three memory levels (high, medium, and low). Twelve subjects from each of the memory groups were required to categorized geometrical stimulus patterns into positive and negative instances according to an unknown conceptual rule that prescribed a relationship between two known attributes. Each subject was assigned to one of three postfeedback delay intervals of 1.5, 20, or 30 seconds. Performance among the three memory levels was not statistically different even though differences from best to worst were apparent …

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The Effects Of Extraneous Stimulation And Activity On Performance In A Recognition-Memory Task, Richard Armstrong Jan 1974

The Effects Of Extraneous Stimulation And Activity On Performance In A Recognition-Memory Task, Richard Armstrong

All Master's Theses

Reaction times of 36 subjects in a recognition-memory task were used to evaluate the effects of extraneous stimulation and activity upon memory processes. No significant effect of noise on RT was suggested. A linear increase in reaction time as a function of memory load was found in all noise conditions. When the recognition-memory task was accompanied by a simultaneous shadowing task, a significant difference in the positive and negative reaction times was suggested.

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The Effect Of Stimulus Complexity On Retrieval Of Information From Memory, George M. Delegans Jan 1973

The Effect Of Stimulus Complexity On Retrieval Of Information From Memory, George M. Delegans

All Master's Theses

Eighteen subjects performed an item-recognition task, involving memorized lists of 1, 2, and 3 nonsense forms, at one of 2 levels of stimulus complexity. Analyses of reaction times as a function of set size and serial position suggested that (a) when the memorized list consisted of simple figures, subjects engaged in a serial exhaustive search, and (b) when the memorized items were complex, the assumption of a simple serial search was untenable.

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Failure To Find A Memory Gradient In A State Dependency Paradigm, James Harold Thomson Jan 1972

Failure To Find A Memory Gradient In A State Dependency Paradigm, James Harold Thomson

All Master's Theses

Rats were trained in a passive avoidance task. Twenty-four hours later they were given a noncontingent footshock (FS) followed by electroconvulsive shock (ECS). ECS followed FS by different intervals ranging from .5 to 300 seconds in different groups. Subjects were tested 24 and 96 hours after the FS-ECS treatments for retention of the avoidance response. There were no statistical differences between the groups. This finding could not be taken as evidence that FS-ECS failed to produce amnesia since no evidence of passive avoidance conditioning in trained subjects not receiving FS-ECS.

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State-Dependent Learning As A Function Of The Temporal Relationship Between Noncontingent Footshock And Electroconvulsive Shock, T. Scott Shutt Oct 1971

State-Dependent Learning As A Function Of The Temporal Relationship Between Noncontingent Footshock And Electroconvulsive Shock, T. Scott Shutt

All Master's Theses

Rats were given a noncontingent footshock followed at various intervals by electroconvulsive shock. Twentyfour hours later they were trained on a non-shock passive avoidance task and tested for retention 72 hours later. When the interval between NCFS and ECS was short the animals showed an amnesia which reduced as the interval was lengthened. An interval of .5 seconds produced the most pronounced amnesia and intervals greater than 10 seconds produced virtually no amnesia. The results were consistent with a state dependent retrieval failure hypothesis.

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