Killeen Peter R
Department of Psychology, Arizona State University, Box 1104, Tempe, Arizona 85287-1104, USA.
J Exp Psychol Anim Behav Process. 2003 Jan;29(1):49-61. doi: 10.1037/0097-7403.29.1.49.
Hungry pigeons received food periodically, signaled by the onset of a keylight. Key pecks aborted the feeding. Subjects responded for thousands of trials, despite the contingent nonreinforcement, with varying probability as the intertrial interval was varied. Hazard functions showed the dominant tendency to be perseveration in responding and not responding. Once perseveration was accounted for, a linear operator model of associative conditioning further improved predictions. Response rates during trials were correlated with the prior probabilities of a response. Rescaled range analyses showed that the behavioral trajectories were a kind of fractional Brownian motion.
饥饿的鸽子会定期得到食物，由按键灯亮起作为信号。啄按键会中止喂食。尽管存在依随的无强化情况，但在数千次试验中，随着试验间隔时间的变化，被试者以不同概率做出反应。风险函数表明，主要趋势是反应和不反应的持续。一旦考虑到持续性，联想条件作用的线性算子模型进一步改善了预测。试验期间的反应率与反应的先验概率相关。重标极差分析表明，行为轨迹是一种分数布朗运动。
