Whether and How Handedness Affects Individuals Cognitive Performance? A Literature Review

Abstract

This literature review article aimed to compile research published in recent years regarding the relationship between bodily habits, specifically handedness, and cognitive performance in memory, attention, and information processing. The article contains three chapters, discussing each aspect separately with a collection of studies and evaluations. The article is able to combine results from studies and form a model graph specialized for studies summaries. Through the synthesis of investigations, handedness seemed to have some relationship with cognition. To be more precise, ICH individuals (those people with mixed hands) have the capacity to create a connection between brain hemispheres, which enhances their performance in memory tests and allows them to better integrate divergent information. In addition, people tend to focus more on their dominant hands; this can affect a persons attention to things happening around them. Lastly, right-handed people performed better in generic cognition tests, and cross-activation of brain lateralization has been demonstrated.