Cite as:
Luger G F, Wishart J G, Bower T G R, 1984, "Modelling the stages of the identity theory of object-concept development in infancy" Perception 13(2) 97 – 115
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Modelling the stages of the identity theory of object-concept development in infancy

George F Luger, Jennifer G Wishart, T G R Bower

Received 15 August 1983; in revised form 6 February 1984

Abstract. A computational model is presented for the three stages of development of the object concept in infancy identified by Bower and Wishart in their research. The stages are described by sets of PROLOG clauses that interpret object structures representing the perceptual phenomena interpreted by the infants themselves. The infant's changes between developmental stages can be described by differences between the rules modelling each stage. Three experiments are presented and the behaviour of the PROLOG model is described for each stage of development. Motion, rest, and boundedness of objects constitute the theoretical underpinning of the running PROLOG model and are hypothesized as the invariant aspects of perception that explain the behaviour of the infant at each stage of development. A possible explanation for transitions between stages is offered and justified in part by the output of the model, which in turn is used to predict the behavioural outcome of an experiment.

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