The approach and preference behaviour of chicks in relation to the intensity of neural-input effects.
The approach tendency of young precocial birds has been found to be related to stimulus magnitude in an inverted U-shaped fashion. This paper discusses the coding and processing of stimulus information in 2 cases, namely, when the quantitative stimulus variable is (1) the size of a moving object and (2) flicker rate. It is shown that the optimal size of a moving object for eliciting approach can b