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Comparative Psychology Commons

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Full-Text Articles in Comparative Psychology

A Foray Into The Interval Timing Capabilities Of Tufted Capuchin Monkeys (Cebus [Sapajus] Apella), Gryff Griffin Jan 2021

A Foray Into The Interval Timing Capabilities Of Tufted Capuchin Monkeys (Cebus [Sapajus] Apella), Gryff Griffin

Honors Theses

Time is a critical part of life and timing on the range from milliseconds to minutes has proven to be critical for several behaviors such as foraging and movement. While the exact neurological structures of interval timing are currently undefined, several studies have been completed comparing the interval timing capabilities of humans and nonhuman primates. However, these studies have unanimously utilized members of Macaca, which limits the abilities for researchers to make apt comparisons between humans and all nonhuman primates. This study sought to investigate whether tufted capuchins (Cebus [Sapajus] apella) have the capability to measure time …


Social Relationships And Self-Directed Behavior In Hamadryas Baboons (Papio Hamadryas Hamadryas), Melissa C. Painter Jan 2018

Social Relationships And Self-Directed Behavior In Hamadryas Baboons (Papio Hamadryas Hamadryas), Melissa C. Painter

Master’s Theses

Self-directed behavior, such as self-scratching and self-grooming, is a behavioral indicator of anxiety in nonhuman primates. Patterns of self-directed behavior are used to identify social and environmental factors related to primate anxiety. This study explored the social context in which individuals in a captive group of hamadryas baboons (Papio hamadryas hamadryas) exhibited self-directed behavior. Self-directed behavior in a partner’s presence was predicted to increase with relationship insecurity. More than 130 hours of behavioral observations were conducted on 12 baboons. Self-directed and social behavior were recorded with focal sampling to determine each animal’s self-directed behavior rate in the presence …