Studies in space orientation. II. Perception of the upright with displaced visual fields and with body tilted.

To overcome certain disadvantages of the tilted-mirror situation as a technique for separating visual and postural determinants of the perceived upright, a new procedure was developed. The S was presented with a small tilted room, on the back wall of which was a rod which he had to adjust to the true upright. In a first test, judgments of the rod were obtained with body upright, and under three different conditions of the field: (a) The S, standing at a distance from the tilted scene, viewed it through a tube which restricted his view to the interior of the scene.

Protein kinases of the human placental microvillous membrane. Their potential role in intrasyncytial communication.

Protein phosphorylation has been shown to alter various plasma membrane functions. To investigate the role of phosphorylation in human placental trophoblast, microvillous membrane vesicles were incubated with [gamma-32-P]ATP and the phosphorylation of endogenous and exogenous protein substrates was measured. The microvillous membrane was shown to possess both adenosine 3',5'-cyclic monophosphate (cAMP)-independent and cAMP-dependent kinases.

A study of X chromosome linkage with field dependence and spatial visualization.

The purposes of this report are to describe a design for the study of X linkage, to illustrate its application using cognitive test scores, and to offer a linkage hypothesis suggested by these data. Sixty-seven three-son families were examined for two X chromosome marker variables--red-green color vision and Xg(a) blood groups--and given a battery of cognitive tests of field dependence and spatial visualization abilities. Evidence was found to suggest that brothers who are identical in Xg(a) phenotype are more similar to each other in extent of field dependence than brothers who are different in Xg(a) phenotype.

Psychological differentiation as a factor in conflict resolution.

Previous studies have shown that persons matched in level of differentiation are likely to develop greater interpersonal attraction in the course of an interaction than are mismatched persons. These studies were all conducted in situations where the interacting persons were working toward a common goal. To test the hypothesis that situational variables may moderate match-mismatch effects, the present study investigated these affects when the interacting persons were in conflict.