Adair E R, Wright B A
J Comp Physiol Psychol. 1976 Feb;90(2):179-84. doi: 10.1037/h0077197.
Squirrel monkeys controlled the air temperature within their test chamber by pulling a chain to select between two preset air temperatures, 10 and 50 degrees C. When the force required to pull the chain was increased in steps from 2.94 to 6.86 N, interresponse interval increased, resulting in wider air temperature swings within the chamber. The average air temperature selected became progressively lower, producing a concomitant fall in skin temperature. However, internal body temperatures (rectal and brain stem) remained nearly constant due to a compensatory increase in metabolic heat production. By allowing a cooler, rather than warmer, environment to result from a decreased response rate, the monkeys guarded against hyperthermia, which they are ill equipped to handle autonomically.
松鼠猴通过拉动链条在两个预设气温（10摄氏度和50摄氏度）之间进行选择，从而控制其测试箱内的气温。当拉动链条所需的力从2.94牛逐步增加到6.86牛时，反应间隔时间增加，导致箱内气温波动幅度变大。所选择的平均气温逐渐降低，导致皮肤温度随之下降。然而，由于代谢产热的代偿性增加，内部体温（直肠和脑干）几乎保持恒定。通过让反应速率降低导致环境变凉而非变暖，猴子们预防了体温过高，因为它们自身自主应对体温过高的能力较差。
