Question

You notice that the pigeon in the laboratory you just entered has a particular way of pecking at the key in its cage. The pigeon seems to increase its rate of pecking towards the end of a two minute period, food is made available, and then pecking slows until the end of the next two minutes. Based on this scalloped pattern of responding, you surmise that the pigeon is on a

Answer 1

what do you wanna to asked dude..!!