Sex differences in tests of mental rotation: Direct manipulation of strategies with eye-tracking.

We conducted what is likely the first large-scale comprehensive eye tracking investigation of the cognitive processes involved in the psychometric mental rotation task with three experiments comparing the performance of men and women on tests of mental rotation with blocks and human figures as stimuli. In all 3 experiments, men achieved higher mean accuracy than women on both tests and all participants showed improved performance on the human figures compared with the blocks. Experiment 1 used a moving window paradigm to elicit a piecemeal processing strategy, whereas Experiment 2 utilized that approach to encourage a holistic processing strategy.

Photographs of real human figures: Item types and persistent sex differences in mental rotation.

The goal of the current study was to provide a better understanding of the role of image familiarity, embodied cognition, and cognitive strategies on sex differences in performance when rotating blocks and photographs of real human bodies. Two new Mental Rotation Tests (MRTs) were created: one using photographs of real human models positioned as closely as possible to computer drawn figures from the human figures MRT used in Doyle and Voyer's 2013 study, and one using analogous block figures. It was hypothesised that, when compared to the analogous block figures, the real human figures would lead to improved accuracy among both men and women, a reduced magnitude of sex differences in accuracy, and a reduced effect of occlusion on women's performance when compared to analogous block figures.

Item type, occlusion, and gender differences in mental rotation.

Two experiments were conducted to examine the role of item type in mental rotation. In each experiment, participants completed two computerized mental rotation tasks, one with blocks as stimuli and one with human figures as stimuli. The tasks were formatted either as a multiple-choice psychometric test (Experiment 1) or as a same-different type task (Experiment 2).

Bodies and occlusion: item types, cognitive processes, and gender differences in mental rotation.

The aim of the current study was to reexamine previous findings in which the magnitude of the male advantage in mental rotation abilities increased when participants mentally rotated occluded versus nonoccluded items and decreased when participants mentally rotated human figures versus blocks. Mainly, the study aimed to address methodological issues noted on previous human figure mental rotations tests as the items composed of blocks and human body were probably not equivalent in terms of their cognitive requirements. Our results did not support previous research on embodied cognition as mental rotation performance decreased among both men and women when mentally rotating human figures compared to block items.

Response format, magnitude of laterality effects, and sex differences in laterality.

The present study examined the evidence for the claim that response format might affect the magnitude of laterality effects by means of a meta-analysis. The analysis included the 396 effect sizes drawn from 266 studies retrieved by Voyer (1996) and relevant to the main effect of laterality and sex differences in laterality for verbal and non-verbal tasks in the auditory, tactile, and visual sensory modality. The response format used in specific studies was the only moderator variable of interest in the present analysis, resulting in four broad response categories (oral, written, computer, and pointing).