The manifestation of infant hand-use preferences when reaching for objects during the seven--to thirteen-month age period.
Handedness is an aspect of hemispheric specialization whose pattern of expression may signal an unusual specialization that in turn, may underlie several developmental psychopathologies. It is generally believed that infant handedness is neither stable nor reliable and hence, cannot be used as an early marker of potential developmental abnormality of hemispheric specialization. We show that infant hand-use preferences for apprehending objects can be reliably assessed and may be relatively stable throughout the 7-13 month age period. However, the results also demonstrate that identifying infant handedness requires assessment using very large sample sizes with multiple assessment periods because it is likely that there may be many more than three patterns in the development of handedness during infancy.
Michel
George F
GF
Psychology Department, University of North Carolina at Greensboro, Greensboro, NC 27402-6170, USA. gfmichel@uncg.edu
Tyler
Amber N
AN
Ferre
Claudio
C
Sheu
Ching-Fan
CF
D000367:Age Factors; D002657:Child Development; D002755:Choice Behavior; D005260:Female; D007839:Functional Laterality; D006801:Humans; D007206:Individuality; D007223:Infant; D008297:Male; D011597:Psychomotor Performance; D012016:Reference Values