The purpose of these experiments was to investigate whether visual perceptions of the earth-
fixed vertical axis are more accurate than those of intrinsic body-fixed axes. In one …

Abstract" With the position of his body varied systematically, the S, in a completely darkened
room, was required to adjust a luminous rod to the true vertical and horizontal. Judgments …

Abstract" Same" or" different" judgments were made by 22 right-handed college students in
2 orientation matching tasks. In 1 task pairs of lines were presented 4. left or right of fixation …

Abstract RH Day (1973) and P. Wenderoth et al (1978) compared Ss' ability to visually align
figures formed by 2 acute angles or by 2 oblique lines (Day) and by an acute angle plus dot …

Two experiments were conducted to address whether a left hemispheric bias would be
observed for categorical processing in both 'what'and 'where'systems (experiment 1) while a …

The effects of stimulus rotation and observer's head-tilt position on various pattern-
recognition tasks were investigated to compare the external directions most closely aligned …

La perception de l'orientation picturale.—Les deux expériences décrites ici indiquent qu'en
matière de perception picturale, les individus de certaines cultures, outre celles qui sont …

In choice reaction time (RT) tasks, college students verified the truth of displays expressing
spatial relations between two objects. The relations were locational (A is left of B) or …

Shape and slant judgments of rotated or frontoparallel ellipses were elicited from 3 groups of
10 undergraduates. A masking stimulus was introduced to control processing time …

There are often large perceptual distortions of shapes lying on the ground plane, even in
well-lit environments. These distortions occur under conditions for which the perception of …