Robinson J K, Flory R K, Dunahoo C L
University of New Hampshire, Department of Psychology, Durham 03824.
Physiol Behav. 1990 Feb;47(2):259-63. doi: 10.1016/0031-9384(90)90140-y.
Pigeons were exposed to fixed-time food schedules of 30, 120, and 480 sec with two reinforcer magnitudes at each. Attack behavior against a rear-projected conspecific image was assessed at each interfood/reinforcer magnitude combination. For seven of eight subjects, attack rate was related to interfood interval by an inverted-U or bitonic function. The larger reinforcer magnitude typically induced more attack than the smaller.
