[Cognitive performance of right-handed and left-handed persons on the Wechsler Adult Intelligence Scale (WAIS-III)].
OBJECTIVE
To contribute to the knowledge of the cognitive differences existent between right-handed and left-handed evaluating the cognitive outcome in a group of adults right-handed and another group of left-handed of similar characteristic (age, gender, cultural level) by means of the Wechsler Adult Intelligence Scale (WAIS-III).


METHODS
Two groups were studied: one formed by 25 right-handed (RHG) and another formed by 25 left-handed (LHG). None of those subject of the study presented mental deficiency neither neurological dysfunctions. The age stocking was of 24.28 years, with a range between 20 and 28 years.


RESULTS
There are not differences in the intellectual quotient (verbal and performance), among the two groups. The LHG obtains worse results that the right-handed in speed of prosecution and in the subtests of arithmetic and key, while the RHG has obtained better results in the subtest of incomplete figures.


CONCLUSIONS
The LHG has a cognitive yield similar to that of the RHG, with slight deficiencies in activities of visoperceptual component. It becomes necessary to continue deepening in the neuropsychological and cognitive differences between right-handed and left-handed, since the cognitive outcome of the left-handed ones continues being a topic in discussion.
Portellano
J A
JA
Departamento de Psicobiología, Facultad de Psicología, Universidad Complutense de Madrid, Pozuelo de Alarcón, Spain. japp@psi.ucm.es
Torrijos
S
S
Martínez-Arias
R
R
Vale
P
P
D000328:Adult; D001519:Behavior / Q000502:physiology*; D003071:Cognition / Q000502:physiology*; D005260:Female; D007839:Functional Laterality; D006801:Humans; D014888:Wechsler Scales