explanations of questions - 14 Feb. 2025 Psy1139 Ans. a Sol. The corpus callosum is the primary commissural region of the brain consisting of white matter tracts that connect the left and right cerebral hemispheres. Psy1140 Ans. a Sol. Self-handicapping is a cognitive strategy by which people avoid effort in the hopes of keeping potential failure from hurting self-esteem. It can be seen as a method of preserving self-esteem but it can also be used for self-enhancement and to manage the impressions of others. Psy1141 Ans. c Sol. Ergonomics is the application of psychological and physiological principles to the engineering and design of products, processes, and systems. So, psychologists in the area of ergonomics focus on man‐machine interaction, physical fatigue, and strain and workplace design.