Baby drops the rattle: asymmetry of duration of grasp by infants.
Infants of mean age 2.7 months maintained grasp of a rattle for a longer mean duration with the right than the left hand, developmentally the earliest instance of asymmetry of manual dexterity and/or preference.
D000367:Age Factors; D005191:Family Characteristics; D007839:Functional Laterality; D006225:Hand; D006801:Humans; D007223:Infant; D009048:Motor Skills