“…Given the appropriate background or standing conditions, three kinds of initial conditions may give rise to an orienting reflex (OR) as reflected in a measure such as the GSR: (1) external stimulus changes of various kinds (Sokolov, 1963) summaarized collectively as collative variables by Berlyne (1960), (2) the significance of stimuli, learned or unlearned (Bernstein, 1979;Maltzman, 1979;O'Gorman, 1979;Pendery & Maltzman, 1977;Razran, 1971;Sokolov, 1963), and (3) self-generated ORs as reflected in problem-solving activity (Maltzman, 1979;Maltzman & Mandell, 1968;Pendery & Maltzman, 1977). Different aspects of the present study are concerned with the second and third classes of OR determiners.…”