Abstract # 183:

Scheduled for Sunday, September 18, 2011 07:00 PM-09:00 PM: Session 23 (Salon G (Sixth Floor)) Poster Presentation


E. C. Sullivan1,2 and J. P. Capitanio1,2
1University of California, Davis, Department of Psychology, One Shields Ave, Davis, CA 95616, USA, 2California National Primate Research Center
     Temperament is thought to be present early in life and stable over time; however, few studies have examined temperament from infancy into adulthood. We investigated stability in measures of temperament in 124 female rhesus monkeys (Macaca mulatta) in infancy (3-4mo.) and adulthood (6yrs) at the California National Primate Research Center. At both time-points, animals were relocated from their homecage to a novel environment and behavioral responsiveness was measured from a 5-min focal observation. For infants, ratings of temperament were also made at the end of the 25hr assessment period. Two infant behavioral responsiveness factors have been previously identified: Activity and Emotionality. Factor analysis of adult behaviors revealed a two-factor structure, accounting for 27% of total variance, with items loading similarly to infant-derived factors. Infant and adult activity factors were positively correlated (r=.254, p=.004), suggesting behavioral patterns of activity are a stable component of temperament, but behavioral measures of emotionality are less consistent. Multiple regression of ratings-based infant temperament factor scores were more predictive of adult-derived behavioral factor scores: infant Confident (B=.269, p=.023) and Nervous (B=.340, p=.007) factor scores positively predicted adult Activity and infant Vigilant (B=-.307, p=.015) and Gentle (B=-.245, p=.032) factor scores negatively predicted adult Emotionality. Overall, these results suggest that observer ratings of infant temperament may be better predictors of adult behavioral responsiveness than are display of specific infant behaviors.