Visual inertia of rotating 3-D objects

Five experiments were designed to determine whether a rotating, transparent 3-D cloud of dots (simulated sphere) could influence the perceived direction of rotation of a subsequent sphere. Experiment 1 established conditions under which the direction of rotation of a virtual sphere was perceived unambiguously. When a near-far luminance difference and perspective depth cues were present, observers consistently saw the sphere rotate in the intended direction. In Experiment 2, a near-far luminance difference was used to create an unambiguous rotation sequence that was followed by a directionally ambiguous rotation sequence that lacked both the near-far luminance cue and the perspective cue. Observers consistently saw the second sequence as rotating in the same direction as the first, indicating the presence of 3-D visual inertia. Experiment 3 showed that 3-D visual inertia was sufficiently powerful to bias the perceived direction of a rotation sequence made unambiguous by a near-far luminance cue. Experiment 5 showed that 3-D visual inertia could be obtained using an occlusion depth cue to create an unambiguous inertia-inducing sequence. Finally, Experiments 2, 4, and 5 all revealed a fast-decay phase of inertia that lasted for approximately 800 msec, followed by an asymptotic phase that lasted for periods as long as 1,600 msec. The implications of these findings are examined with respect to motion mechanisms of 3-D visual inertia.     

Facilitated Communication as an Ideomotor Response

Forty college students were taught facilitated communication via a commercially available training videotape. They were then asked to facilitate the communication of a confederate, who was described as developmentally disabled and unable to speak. All 40 participants produced responses that they attributed at least partially to the confederate, and most attributed all of the communication entirely to her. Eighty-nine percent produced responses corresponding to information they had received, most of which was unknown to the confederate. Responding was significantly correlated with simple ideomotor responses with a pendulum and was not affected by information about the controversy surrounding facilitated communication. These data support the hypothesis that facilitated communication is an instance of automatic writing, akin to that observed in hypothesis and with Ouija boards, and that the ability to produce automatic writing is more common than previously thought.     

Differentiation Matching in School Desegregation Workshops

The effectiveness of matching the conceptual structure of participants in educational training and psychotherapy experiences has been demonstrated in previous research. This paper describes an attempt to test the effectiveness of this model in a school desegregation workshop designed to promote a mandatory bussing proposal by a local school board. Differentiation matching had little effect on participants' global judgments of satisfaction with workshop goals but was significantly and inversely related to the decision to voluntarily bus a child, especially among blacks. Abstractness of topics discussed affected participant endorsement of workshop goals but did not affect bussing decision. The findings suggest that how such workshops are organized is dependent on whether the workshop success is to be evaluated on the basis of community public relations or actual decisions to bus children.     

The Exercise of Information Influence in Legal Advocacy1

The information search and transmission behavior of information-supplying agents was studied using an experimental analog of a legal situation. An experiment was conducted to test the predictions of social psychological theories concerning the use of information influence and to test several assumptions of proponents of the American adversary system in law. In a 2 × 2 × 3 factorial design, first-year law students acted as attorneys under conditions of high correspondence of outcomes with the judge versus high correspondence of outcomes with an involved party; perception that the outcomes of another attorney in the situation were correspondent with the judge versus correspondent with an involved party; and the discovery that the information environment was favorable, ambiguous, or unfavorable. Significantly greater information search was observed for party-oriented subjects relative to judge-oriented subjects only when the information environment was unfavorable. Party-oriented subjects showed greater attempted use of information influence than did judge-oriented subjects. Analyses of the amount and distribution of the information transmitted by pairs of subjects assessed the characteristics of several legal “systems”. The theoretical and applied implications of the study were discussed.