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Biomedical subjects

L Pizzamiglio

Publications and source records attributed to L Pizzamiglio.

70 records · Page 4Linked to original sources
PubMed1981

Sex and cognitive influence on visual hemifield superiority for face and letter recognition.

Two groups of field independent individuals (one M and one F) and two groups of field dependent individuals (one M and one F) were selected as subjects in the experiment. The classification of field dependence-independence was based on predetermined RFT and EFT standards. The subjects, all right-handed, were given a face and a letter recognition task in a tachistoscopic visual hemifield paradigm; reaction time with either hand was the dependent measure. field independent subjects of both sexes showed a clear right-field superiority for letter and a left-field superiority in both letter and face recognition, although of a smaller magnitude than the previous group. The results of the experiment do not support previous findings of no field superiority in females for face recognition; on the contrary, they provide additional evidence that measures of cognitive style significantly predict hemispheric specialization.

Adult↗
PubMed1979

Hemispheric superiorities on a unilateral tactile test: relationship to cognitive dimensions.

Subjects, 30 male and 30 female, were administered a unilateral tactile test, which requires the subject to judge line orientations. More field-independent individuals in the sample perceived line orientation significantly more accurately with their left hand than with their right hand, while more field-dependent individuals showed no significant lateral difference. However, a similar pattern was observed when a verbal comprehension measure was used as a criterion. The results are discussed as they relate to the hypothesis of a link between psychological differentiation and cerebral specialization.

Dominance, Cerebral↗
PubMed1977

A study of X chromosome linkage with field dependence and spatial visualization.

The purposes of this report are to describe a design for the study of X linkage, to illustrate its application using cognitive test scores, and to offer a linkage hypothesis suggested by these data. Sixty-seven three-son families were examined for two X chromosome marker variables--red-green color vision and Xg(a) blood groups--and given a battery of cognitive tests of field dependence and spatial visualization abilities. Evidence was found to suggest that brothers who are identical in Xg(a) phenotype are more similar to each other in extent of field dependence than brothers who are different in Xg(a) phenotype. This result is tentative because of the small number of informative cases and the many linkage associations examined. If cross-validated, such a finding would be consistent with the proposition that an X chromosome gene contributes to the field dependence cognitive style.

Blood Group Antigens↗
PubMed1975

Effects of field-dependency, social class and sex of children between ages 5 and 10.

Development of field-independency has been studied as a function of age (5 to 10), social class, and sex utilizing two groups of 96 subjects each of high and low social class. On the Children's Embedded-figures Test a critical developmental period appears between ages 5 and 8 yr. for all Ss; on the Draw-a-Person such a period appears between ages 5 and 6 for high social class and between ages 6 and 8 for lower social class; scores on both tests were statistically significant as a function of social class at every age beginning at age 6. Sex did not seem to play any significant role. Three main masking factors have been singled out on the Children's Embedded-figures Test. Their differential effects on scores of Ss in the two classes are examined.

Child↗