Behavior and Behavior Mechanisms Commons^™

Introversion And Autism: A Conceptual Exploration Of The Placement Of Introversion On The Autism Spectrum, Jennifer Grimes

Electronic Theses and Dissertations

The conceptualization of the personality construct of introversion has been problematic since the term's inception due to the complexity and seemingly self-contradictory nature of the collection of attributes of which it is comprised. To advance the understanding of introversion, I propose that it is a continuous segment of the non-clinical part of the autism spectrum, and that it is not the same as the inverse of extraversion. When introversion and autism are placed on the same continuum, the nature of the relationship of the traits becomes more apparent, and new possibilities are available for exploration of both autism and introversion. …

Social Transmission Of Fear In Rats: The Role Of 22-Khz Ultrasonic Distress Vocalization, Eun Joo Kim, Earnest S. Kim, Ellen Covey, Jeansok J. Kim

Faculty Publications - Psychology Department

Background

Social alarm calls alert animals to potential danger and thereby promote group survival. Adult laboratory rats in distress emit 22-kHz ultrasonic vocalization (USV) calls, but the question of whether these USV calls directly elicit defensive behavior in conspecifics is unresolved.

Methodology/Principal Findings

The present study investigated, in pair-housed male rats, whether and how the conditioned fear-induced 22-kHz USVs emitted by the ‘sender’ animal affect the behavior of its partner, the ‘receiver’ animal, when both are placed together in a novel chamber. The sender rats’ conditioned fear responses evoked significant freezing (an overt evidence of fear) in receiver rats that …