The left hemisphere stores our current beliefs. The right hemisphere evaluates and updates these beliefs as necessary (Christman, Henning, Geers, Propper & Niebauer, 2008).

Inconsistent handedness (being weakly-handed) is associated with greater increased interaction between hemispheres (Pritchard, Propper & Christman,  2013).

Inconsistent-handers have been found to perform better than consistent-handers on both categorical and coordinate spatial processing tasks (Propper et al., 2018).

Studies show that increased imbalances of hemispheric activity are associated with increased anger and hostility (Propper, Januszewski, Christman, & Brunye, 2011).

Consistently-handed people have the most asymmetric arcuate fasciculus, with larger left versus right arcuate (Christman, Propper & Brown, 2006).

Mixed-handed persons are more gullible than left- or right-handers (Christman, Henning, Geers, Propper & Niebauer, 2008). However, they have an advantage with episodic memory (Propper, Christman & Phaneuf, 2005). This is most likely due to the fact that a interhemispheric processing is associated with a superior episodic memory (Christman & Propper, 2003).

Mixed-handedness is associated with an earlier offset of childhood amnesia (Christman, Propper & Brown, 2006).

Mixed-handed people spend a greater percentage of their sleep period asleep, spending less time in REM sleep compared to dominant left- and right-handed individuals (Propper, Lawton, Przborski & Christman, 2004).