Document Detail

Temperamental development in the rat: the first year.
MedLine Citation:
PMID:  16136549     Owner:  NLM     Status:  MEDLINE    
Behavioral continuity and change was studied in 32 (16 male) Wistar rats observed in the hole board and canopy tests, considered to measure exploration and anxiety, respectively. Subjects were tested at 6, 11, 16, 21, 37, and 52 weeks of age. In comparison to 16-week-old rats (the standard age of rats in many experiments), juveniles seemed more anxious and exploratory, whereas mature rats were more anxious and less exploratory. There was substantial behavioral consistency between week 6 and 52, the correlations being especially high between weeks 11 and 52. Principal components analyses revealed one temperamental dimension reflecting harm avoidance in juvenile and mature rats, whereas adult rats were characterized by a further dimension, reflecting novelty seeking.
Jeremy Ray; Stefan Hansen
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Developmental psychobiology     Volume:  47     ISSN:  0012-1630     ISO Abbreviation:  Dev Psychobiol     Publication Date:  2005 Sep 
Date Detail:
Created Date:  2005-09-06     Completed Date:  2006-02-10     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0164074     Medline TA:  Dev Psychobiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  136-44     Citation Subset:  IM    
Copyright Information:
Copyright 2005 Wiley Periodicals, Inc
Department of Psychology, Göteborg University, Box 500, SE-405 30 Göteborg, Sweden.
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MeSH Terms
Age Factors
Analysis of Variance
Anxiety / psychology
Avoidance Learning / physiology
Behavior, Animal / physiology*
Exploratory Behavior / physiology
Principal Component Analysis / methods
Rats, Wistar
Sex Factors
Temperament / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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