Chapter 11 Handedness, Sex, and Spatial Ability

Lewis, Richard S.; Harris, Lauren Julius

doi:10.1016/s0166-4115(08)61252-2

Cited by 8 publications

(5 citation statements)

References 87 publications

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“…Bishop, 1990), this sort of re-analysis runs serious risks of a Type I error. But Harshman's interaction has been confirmed in two subsequently published replications (Lewis & Harris, 1990;Gordon & Kravetz, 1991) and, for what it is worth, in a study of Cambridge undergraduates (Hilliard & Mackintosh, unpublished). This finding is no doubt both intriguing and potentially important.…”

Section: The Interpretation Of Sex Differences In Spatial Abilitymentioning

confidence: 88%

Sex differences and IQ

Mackintosh

1996

J. Biosoc. Sci.

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Of all the controversial issues surrounding IQ tests, few have generated more heat and less light than the question whether different groups in our society differ in average IQ. Those who study, and find evidence of, such differences believe that they are addressing a legitimate scientific issue and one whose implications, however unpalatable they may be, society ignores at its peril. Their critics insist that the question has no intrinsic scientific interest whatsoever, and conclude that those who study it are either naive, deceiving themselves or only too happy to find justification for their own comfortable position within an unjust and unequal society. In the case of sex differences in IQ scores, at least, one could argue that both sides have got it largely wrong. With one exception, there is relatively little social or political implication in such differences as there are. More importantly, however, arguments will be presented against the critics' view that such research is of no intrinsic scientific interest. On the contrary, it has already helped to answer some important scientific questions about the nature of IQ, and has the potential to answer more. Unfortunately, those who engage in such research have usually failed to see this.

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Section: The Interpretation Of Sex Differences In Spatial Abilitymentioning

confidence: 88%

Sex differences and IQ

Mackintosh

1996

J. Biosoc. Sci.

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“…However, our results did not confirm our first hypothesis, since significant differences in drawing performance of right-and left-handed children were not found, either in the simple or in the composed tasks, which require the correct placement of the drawing parts in the space. The total absence of differences between right-and left-handers is of special interest given repeated claims that left-handers present advanced spatial ability (Lewis & Harris, 1990), which is considered to play an important role in drawing performance (Dennis, 1992). Additionally, it was found that drawing performance improved with age, irrespective of hand preference and sex.…”

Section: Discussionmentioning

confidence: 99%

“…One of the most common approaches in the investigation of the relationship between cerebral organisation and cognition is the consideration of handedness as an indicator of brain laterality and the comparison of right-and left-handed subjects' performances in cognitive abilities. Such an approach is of special interest in the study of the drawing activity since previous studies have shown that left-and right-handers display important differences in spatial ability (see Lewis & Harris, 1990), which is considered to intervene in the drawing process and to determine the drawing outcome (Dennis, 1992).…”

mentioning

confidence: 99%

Left‐ and right‐handed children's drawing performance: Is there any difference?

Vlachos¹,

Bonoti²

2004

Laterality: Asymmetries of Body, Brain and Cognition

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The aim of the present study was to investigate the effect of hand preference on children's drawing development. An equal number of left- and right-handed children (N = 182), aged 7 to 12 years were asked to complete four different drawing tasks. During the drawing process, directionality of horizontal, vertical, and circular strokes as well as sequencing was recorded. Each drawing was scored according to the developmental stage to which is corresponded. It was found that drawing performance improved with age, irrespectively of hand preference and sex. In other words, left- and right-handers' drawing performance across the four tasks was not found to differ significantly. The only consistent difference between the two groups involved was in the production of horizontal lines. The results are discussed in terms of implications for questions about the lack of differences in left- and right-handed children's drawing performance.

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“…For instance, Casey and Brabeck (1989) suggested that the often-mentioned advantage of males for some visuospatial tasks (Lewis, College, & Harris, 1990) is not observed in right-handed females with left-handed relatives. Thus, it might be necessary to look for complex interactions between sex, handedness, and "familial sinistrality" in studies examining relations between lateralities and cognitive per-430 DE AGOSTINI AND DELLATOLAS formances.…”

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confidence: 99%

Lateralities in Normal Children Ages 3 to 8 and Their Role in Cognitive Performances

Agostini¹,

Dellatolas²

2001

Developmental Neuropsychology

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The presence and type of correlations between laterality and cognitive skills in normal adults or children remains controversial. This study examines relations between different lateralities, that is, handedness, footedness, eyedness, parental left-handedness, asymmetry of hand skill on a computerized version of the Peg-Moving Task (CPMT) proposed by Annett (1985), and different verbal and non-verbal skills assessed by 13 tasks in 254 normal children, aged 3 to 8 years. Results showed increasing performances with increasing dextrality on the CPMT for 2 tasks involving phonology (Phonological Fluency and Reading Nonwords), 2 tasks involving visual memory and visuospatial skills, and for finger localization. Footedness, eyedness, and parental left-handedness had no significant effect on cognitive performance. The pattern of performance according to the sinistrality-dextrality continuum was highly variable from one cognitive task to the other. The previously mentioned results suggest that relative hand skill is a better correlative of cognitiveperformance than the usual measures of handedness. Further study is needed to specify the pattern of associations.

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Chapter 11 Handedness, Sex, and Spatial Ability

Cited by 8 publications

References 87 publications

Sex differences and IQ

Sex differences and IQ

Left‐ and right‐handed children's drawing performance: Is there any difference?

Lateralities in Normal Children Ages 3 to 8 and Their Role in Cognitive Performances

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