The approach and preference behaviour of chicks in relation to the intensity of neural-input effects.

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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 be derived from motion parameters that describe the growth in angular size of the projected retinal image as the object approaches the chick. A 2nd analysis provides support for the hypothesis that the chick's attraction to intermittent light in the vicinity of 4 flashes/sec can be related to the alpha rhythm of the chick's brain waves. The conclusions are based on reanalyses of the results from studies by A. H. Schulman et al (1970) and J. K. Kovach (1980).


  • Hans Bengtsson
Enheter & grupper

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Psykologi


  • approach motivation, motivational systems, biphasic theory, Schneirla, avoidance motivation
Sidor (från-till)490-496
TidskriftAnimal Behaviour
Utgåva nummer2
StatusPublished - 1983
Peer review utfördJa