Yoburn B C, Cohen P S
J Exp Anal Behav. 1979 Jan;31(1):91-101. doi: 10.1901/jeab.1979.31-91.
Four White King pigeons in Experiment I were exposed to a fixed-time 90-second food schedule with successive access to water and a conspecific target. Drinking per session was sporadic and minimal, while attack per session occurred during most interfood intervals for all animals. Analysis of the temporal distribution of attack showed that the typical postreinforcement pattern of attack developed over the course of the experiment. In Experiment II, the same animals were exposed to a series of fixed-time schedules ranging from 30 to 360 seconds with successive access to water and target. Time engaged in drinking and the number of interfood intervals with drinking were less than that of attack. Food and no-food baselines, which have been typically used to assess schedules-induced drinking and attack, respectively, were used to evaluate the effect of the schedule on attack and water ingestion. Relative to the no-food baseline, both attack and drinking were enhanced by the schedule in all birds. Relative to the food baseline, drinking was slightly suppressed in three birds and attack was enhanced in all. For all animals, the food baseline resulted in more attack and drinking than the no-food baseline.
实验一中的四只白王鸽被设定为固定时间的90秒进食时间表，依次给予水和同种目标物。每次实验中的饮水行为零散且量少，而所有动物在大多数进食间隔期间都会出现攻击行为。对攻击行为的时间分布分析表明，典型的强化后攻击模式在实验过程中逐渐形成。在实验二中，同样的动物被设定为一系列从30秒到360秒的固定时间时间表，依次给予水和目标物。饮水时间和有饮水行为的进食间隔次数均少于攻击行为。通常分别用于评估时间表诱导的饮水和攻击行为的进食基线和无进食基线，被用来评估时间表对攻击行为和水摄入的影响。相对于无进食基线，所有鸟类的攻击行为和饮水行为都因时间表而增强。相对于进食基线，三只鸟的饮水行为略有抑制，而所有鸟的攻击行为均增强。对于所有动物，进食基线导致的攻击行为和饮水行为比无进食基线更多。
