Social Science
EXCEPTIONAL CHILDREN
According to Webster's dictionary, the word "exceptional" means "rare" or "unusual." In psychology, however, we require a more precise definition. We ask: In what respects does this person who we consider exceptional differ from his mates? Are these differ-
ences likely to be an advantage or a handicap to himself and to
society? To what extent can they be modified by medical or
surgical treatment or through education and training?
The statistician asks further questions. Is the difference under
consideration a matter of degree or of kind? In other words, is
this person regarded as exceptional because he ranks so far above
or below the average of his age and sex in respect to a trait that
all possess in some degree, or because he shows some character-
istic or has had some kind of experience not shared by the gen- erality? Are we dealing with a continuous or with a discrete type of function? ^ How accurately can the needed facts be deter- mined? What conditions are most likely to give rise to erroneous
diagnoses or to incorrect measurements? By what means can these
conditions be minimized or avoided?
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