Theses and Dissertations - UTB/UTPA

Date of Award


Document Type


Degree Name

Master of Arts (MA)



First Advisor

Dr. Frederick A. Ernst

Second Advisor

Dr. Cheryl Fielding

Third Advisor

Dr. Valerie N. Neeley


The area of impulsivity is widely studied among many different professional fields. However, given the broad brush that has been used to paint the construct of impulsivity, it’s apparent that there is no true agreement on a definitive definition. In the present study, a purely behavioral procedure was tested with 10 female Sprague-Dawley rats who were placed on a progressive ratio and then a fixed interval 20 s schedule of reinforcement to see if these two schedules were related measures of impulsivity. The definition of impulsivity used in this study was relative to the performance of all animals in that those that responded sooner and the most were considered impulsive. It was hypothesized that that high rates of responding in a PR schedule of reinforcement would predict high rates of responding in an FI schedule of reinforcement. This hypothesis was not supported and possible explanations and limitations are discussed.


Copyright 2011 Christine Gutierrez. All Rights Reserved.

Granting Institution

University of Texas-Pan American

Included in

Psychology Commons