LATERAL BIAS IN CAPUCHIN MONKEYS (CEBUS-APELLA) - CONCORDANCE BETWEENPARENTS AND OFFSPRING

We examined lateral bias for looking, reaching, and turning in 33 tuft ed capuchin monkeys (Cebus apella) comprising 29 parent-offspring dyad s (13 mother-offspring dyads and 16 father-offspring dyads). We found evidence for maternal and paternal contributions to the direction of l ooking bias but no evidence for contribution from either parent to the direction of reaching bias. Further, we found evidence of differentia l maternal and paternal influences on the direction of offspring turni ng bias. Finally, we found no evidence of parental contribution to the strength of lateral bias for any of our measures. Our results indicat e that parental contributions to lateral bias in humans and apes may n ot correspond to those in monkeys. (C) 1997 John Wiley & Sons, Inc.