Laterality of cradling in relation to perception and expression of facial affect

A dominant leftward cradling bias has been observed in women in non feeding interaction with infants. Reasons for this behavior have been sought in behavioral asymmetries, but none have sufficiently justified the presence of this leftward pattern. Recently, the cradling bias has been linked to affective processing, considered to be a specialized function of the nondominant (right) hemisphere (Manning & Chamberlain, 1990). This study investigates Manning and Chamberlain's (1990) suggestions that a relationship exists between leftward cradling and the interpretation and expression of affect. Eighty-six nulliparous women were tested for this relationship by correlating direction of cradling bias with visual field dominance for perception of facially expressed emotion and expression of affect. No significant relationship was found to directly support the hypotheses.