T. Rebeko

Subjects attributed 28 fragments to the figures memorized earlier by "Yes-No" procedure. There were two kinds of figures: figure-model ("Yes") and figure-dislracter ( "No"). The fragments distinguished by two parameters: (1) the degree of completion in relation to appropriate figures (2 or 3 level) and (2) perceptive attributes reproducing the "head" or the "tail" part of the figure (2 levels). All 28 fragments were shown in vertical or horizontal positions with three pseudo-random sequence interpreted as three levels of the learning factor. The type of response and reaction time (RT) were recorded. The significant types of lesponses, i.e. the combination of the fragment form (perceptive attributes), the type (Yes-No) and RT. rotation and learning factors were calculated by "hierarhische aufsteigendc analyse (statistical program KFA). The insignificance of rotation factor is shown; the factor of learning is related to No response. The types including Yes-response is distinguished from the types based on No-response in poor discriminability and the large RT. The data are interpeted in terms of perceprive invariants determining the independence of Yes- and No-estimations.