Hopkins W D, Bennett A J
Division of Behavioral Biology, Yerkes Regional Primate Research Center, Emory University, Atlanta, Georgia 30322.
J Exp Psychol Anim Behav Process. 1994 Oct;20(4):413-8.
The relationship between hand preference and approach-avoidance behavior was examined in 49 chimpanzees (Pan). Ss were presented with 2 sets of novel objects on 4 consecutive days. The objects were presented for 2 hr during each session, and latency to touch any object was recorded for each S. Latency scores were then compared for chimpanzees that had been determined to be non-right- or right-handed. Right-handed Ss approached and touched the objects significantly faster than non-right-handed Ss did. In addition, males touched the objects significantly faster than did females. Correlations in approach-avoidance behavior were significant across stimulus sets and days of testing. The overall results support recent theoretical models linking hemispheric specialization with the expression of positive and negative affective behaviors.
研究人员对49只黑猩猩（Pan）的用手偏好与趋近-回避行为之间的关系进行了考察。连续4天向受试对象呈现两组新的物体。每次实验中物体呈现2小时，并记录每个受试对象触碰任何物体的潜伏期。然后比较已确定为非右利手或右利手的黑猩猩的潜伏期得分。右利手的受试对象比非右利手的受试对象趋近并触碰物体的速度明显更快。此外，雄性触碰物体的速度明显快于雌性。在不同刺激组和测试日之间，趋近-回避行为的相关性显著。总体结果支持了最近将半球特化与正负情感行为表达联系起来的理论模型。
