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Titolo:
LEFT-HANDEDNESS AND OLD-AGE - DO LEFT-HANDERS DIE EARLIER
Autore:
HUGDAHL K; SATZ P; MITRUSHINA M; MILLER EN;
Indirizzi:
UNIV BERGEN,DEPT BIOL & MED PSYCHOL,ARSTADVEIEN 21 N-5009 BERGEN NORWAY MULTICTR AIDS COHORT STUDY,LOS ANGELES CTR LOS ANGELES CA 00000 UCLA,INST NEUROPSYCHIAT,DEPT PSYCHIAT & BIOBEHAV SCI LOS ANGELES CA 00000
Titolo Testata:
Neuropsychologia
fascicolo: 4, volume: 31, anno: 1993,
pagine: 325 - 333
SICI:
0028-3932(1993)31:4<325:LAO-DL>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
HOMOSEXUAL MEN; PREFERENCE; LATERALITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social Sciences Citation Index
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
24
Recensione:
Indirizzi per estratti:
Citazione:
K. Hugdahl et al., "LEFT-HANDEDNESS AND OLD-AGE - DO LEFT-HANDERS DIE EARLIER", Neuropsychologia, 31(4), 1993, pp. 325-333

Abstract

Data are presented on the prevalence of current left-handedness and prior left-handedness (switched) in 2787 subjects from 21 to 101 years of age. In addition, data on sex differences, familial sinistrality, hand posture when writing, and education were recorded. Two hypotheses were tested. The elimination hypothesis states that reduced frequency of left-handers in old age is due to reduced longevity. The modification hypothesis states that differences in the number of left-handers between older and younger persons are due to changing patterns of socialnorms. The results showed a decreasing prevalence of left-handedness across the age span, with 15.22% in the youngest group (21-30 years), but only 1.67% in subjects older than 80 years. There was however a corresponding increase in the number of subjects who bad switched hand for writing, 2.69% in the youngest group to 6.75% in subjects 80 years and above. This supports the modification hypothesis and questions theelimination hypothesis. However, the mean percent score was still lower in subjects above compared to below age 40 after correction for hand switching. Thus, although changes in social norms towards left-handers seem to be the most likely explanation, we have not empirically disproved the elimination hypothesis.

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Documento generato il 28/11/20 alle ore 04:10:15