Hand and Foot Selection in Mental Body Rotations Involves Motor-Cognitive Interactions

Area of Science:

• Cognitive Psychology
• Neuroscience
• Human Factors

Background:

• Action imagery aids perspective-taking in tasks like mental body rotation.
• Stimulus factors such as perspective, rotation angle, and abstractness impact judgment speed and accuracy.

Purpose of the Study:

• Investigate if left-right judgments are more difficult for legs than arms.
• Examine limb type interaction with perspective and rotation factors.
• Explore a combined speed-accuracy score for robust ability measurement.

Main Methods:

• Two studies involving left-right judgments on mental body rotations.
• Manipulation of stimulus perspective (front/back view), rotational angle (head-up/down), and limb type (arms/legs).
• Analysis using a linear speed-accuracy score to assess performance.

Main Results:

• Front views and head-down rotations increased task difficulty due to vertical and horizontal perspective shifts.
• Leg stimuli were more challenging than arm stimuli, particularly in head-down rotations.
• Realistic stimuli, especially in back views, facilitated performance and amplified perspective effects compared to abstract stimuli.

Conclusions:

• Legs present greater challenges than arms in mental body rotation tasks, influenced by rotation perspective.
• Realistic stimuli enhance task comprehension and magnify perspective-related performance differences.
• The linear speed-accuracy score is a valid metric for quantifying individual performance in mental body rotation.