Theses and Dissertations

Date of Award


Document Type


Degree Name

Master of Arts (MA)


Experimental Psychology

First Advisor

Dr. Mario Gil

Second Advisor

Dr. Hugo Curiel

Third Advisor

Angela Mar


The Monodelphis domestica, commonly known as the grey short-tailed opossum, has become an increasingly frequented animal model for areas of psychological study, including comparative psychology. Despite the growing interest in utilizing the Monodelphis as an animal model, several areas of research remain limited in what has been studied. This includes associative learning and the effects of environmental enrichment on the Monodelphis. This study novelly incorporates the two using environmental enrichment with the conditioned place preference (CPP) paradigm to both diversify associative learning literature and expand existing knowledge on the Monodelphis domestica. The CPP paradigm included interactive objects as environmental enrichment to investigate biological sex differences in Monodelphis behavioral responses.


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