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Author Clark, M.L.; Ayers, M. url  doi
openurl 
  Title Friendship similarity during early adolescence: gender and racial patterns Type Journal Article
  Year 1992 Publication The Journal of Psychology Abbreviated Journal J Psychol  
  Volume 126 Issue (up) 4 Pages 393-405  
  Keywords Achievement; Adolescent; African Americans/*psychology; *Cross-Cultural Comparison; Female; *Gender Identity; Humans; Individuality; *Interpersonal Relations; Male; *Personality Development; Personality Inventory; Sociometric Techniques  
  Abstract We studied the relationship of reciprocity, gender, and racial composition (Caucasian, African American, cross-race) of adolescent friendship dyads to similarity and proximity in 136 young adolescents. We found that adolescents selected friends who were of the same gender and race and that female dyads were more similar than male dyads on verbal achievement and several personality dimensions. Caucasian dyads were more similar than African American dyads on verbal achievement, mental alertness, and dominance. African American adolescents had more contact with their best friends outside school, whereas Caucasian adolescent friends had more in-school contact. African American students had fewer reciprocal relationships than the Caucasian students. Cross-race friendships were less reciprocal than same-race friendships. Race and gender were important in determining friendship patterns. Similarity and proximity were more important than reciprocity in understanding early adolescent friendships.  
  Address Department of Psychology, Virginia Commonwealth University  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0022-3980 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:1403972 Approved no  
  Call Number Equine Behaviour @ team @ Serial 5628  
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Author Valenchon, M.; Lévy, F.; Górecka-Bruzda, A.; Calandreau, L.; Lansade, L. url  doi
openurl 
  Title Characterization of long-term memory, resistance to extinction, and influence of temperament during two instrumental tasks in horses Type Journal Article
  Year 2013 Publication Abbreviated Journal Animal Cognition  
  Volume 16 Issue (up) 6 Pages 1001-1006  
  Keywords Personality; Learning; Individuality; Fearfulness; Equid; Cognitive flexibility  
  Abstract The present study investigated the influence of temperament on long-term recall and extinction of 2 instrumental tasks in 26 horses. In the first task (backward task), horses learned to walk backward, using commands given by an experimenter, in order to obtain a food reward. In the second task (active avoidance task), horses had to cross an obstacle after a bell rang in order to avoid emission of an air puff. Twenty-two months after acquisition, horses exhibited perfect recall performance in both tasks. Accordingly, no influence of temperament on recall performance could be observed for either task. In contrast, in the absence of positive or negative outcomes, the horses’ ability to extinguish their response to either task was highly variable. Resistance to extinction was related to some indicators of temperament: The most fearful horses tended to be the most resistant to extinction in the backward task, while the least sensitive horses tended to be the most resistant to extinction in the active avoidance task. These findings reveal extensive long-term memory abilities in horses and suggest an influence of temperament on learning processes other than acquisition.  
  Address  
  Corporate Author Thesis  
  Publisher Springer Berlin Heidelberg Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1435-9448 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5735  
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