Rashotte M E, O'Connell J M, Beidler D L
J Exp Psychol Anim Behav Process. 1982 Apr;8(2):142-53.
In a laboratory simulation of foraging conditions, pigeons maintained ad lib weight by treadle pressing for lengthy periods of access to grain in a 24-hr live-in environment. Localized visual signals produced by treadle pressing evoked approach and pecking behavior if they signaled impending food presentation (Pavlovian first-order conditioning) or the presentation of an established signal for food (Pavlovian second-order conditioning). These findings imply a role for associative mechanisms in the control of foraging.
在觅食条件的实验室模拟中，鸽子在24小时的居住环境中通过踩踏板以长时间获取谷物来维持随意进食的体重。如果踩踏板产生的局部视觉信号预示即将呈现食物（巴甫洛夫一级条件反射）或呈现已确立的食物信号（巴甫洛夫二级条件反射），则会引发接近和啄食行为。这些发现表明联想机制在觅食控制中发挥作用。
