RELATIONAL PSYCHOPHYSICS: MULTIDIMENSIONAL ASPECTS OF COMPARATIVE PERCEPTION
Whereas the contextual basis of all psychophysical responding is well founded, the compound influence of sensory and perceptual frames of reference constitutes a challenging issue in comparative one- and multidimensional psychophysics (e.g. Sarris, 2001, 2004, 2006). We refer to previous investigations which tested the assumption that the chickenâ€™s relational choice is systematically altered by context conditions similar to findings stemming from human participants (Hauf, 2001; Hauf & Sarris, 2001a, b). In Experiment 1 the asymmetry of the training and the test stimuli varying along a single dimension was investigated by means of a two-stimulus two-choice paradigm. Many objects differ in two or more dimensions, therefore the question of Experiment 2 was whether different relational choice strategies exist when, say, two psychophysical dimensions are used simultaneously; accordingly, the one- dimensional paradigm was extended to a four-stimulus two-choice setup. In this paper the common and heterogeneous findings of this line of comparative research are presented and discussed (â€œconfiguralityâ€).