If You Can Replicate the Handedness-Immune Disorder Effect, the More Power to You

Segalowitz, S. J.; Berge, Brenda; Lawson, Sheila; Brown, Deborah L

doi:10.1006/brcg.1994.1055

Cited by 7 publications

(4 citation statements)

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“…The questionnaire included sections on hand preference and laterality in general, basic demographic information, general health, school subject preferences, social style, sleep patterns, and incidence of head injury. The questionnaire assessed (a) handedness preference with a modified Edinburgh Handedness Inventory (Oldfield, 1971); (b) head-injury history; (c) developmental disability history; (d) present general health, including experiencing sleep difficulty (including 5-point rating scales for severity of symptoms) and immune disorders (Segalowitz, Lawson, Berge, & Brown, 1994); and (e) social functioning difficulties (via 4-point rating scales on specific social-interactive difficulties).…”

Section: Materials and Proceduresmentioning

confidence: 99%

Subtle Symptoms Associated with Self-Reported Mild Head Injury

Segalowitz

Lawson

1995

J Learn Disabil

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We conducted a survey on the relationship between mild head injury incidence and a variety of psychological and educational symptoms in a sample of 1,345 high school and 2,321 university students. Once figures were adjusted to represent a 50:50 gender ratio, 30% to 37% of subjects reported having experienced a head injury incident, with 12% to 15% of the total group of subjects reporting such an incident with loss of consciousness. We found significant relationships between the incidence of such mild head injury and gender, sleep difficulties, social difficulties, handedness pattern, and diagnoses of attention deficit, depression, and speech, language, and reading disorders.

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Section: Materials and Proceduresmentioning

confidence: 99%

Subtle Symptoms Associated with Self-Reported Mild Head Injury

Segalowitz

Lawson

1995

J Learn Disabil

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“…Interestingly, two of the three other large studies that used concurrent controls have not found differences between heterosexual and homosexual men (Gladue and Bailey, 1995;Marchant-Haycox et al, 1991). Finally, recent power analyses suggest that the likelihood of finding a significant difference between heterosexual and homosexual men may be low even with large samples (Segalowitz et al, 1994). It may not be surprising, then, that the extant data are equivocal.…”

Section: Discussionmentioning

confidence: 98%

Handedness in homosexual and heterosexual men in the Kinsey interview data

Bogaert¹,

Blanchard²

1996

Arch Sex Behav

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The relationship between sexual orientation and handedness in a large sample of men was examined. Subjects were 6544 nondelinquent men interviewed by the Kinsey Institute for Research in Sex, Gender, and Reproduction from 1938 to 1963. Subjects were classified as either homosexual (n = 1004) or heterosexual (n = 4579). Results failed to demonstrate a difference in handedness, with both groups having rates of non-right-handedness (i.e., 11-12%) approximately equal to establish norms. These findings do not replicate some recent studies indicating an increased level of non-right-handedness in homosexual men.

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“…We used a single measure of hand preference rather than composite handedness scores, but it may be that some measures of hand preference are more sensitive to variation in immunological functioning than others, and this warrants Downloaded by [Columbia University] at 09:29 09 December 2014 further consideration. Finally, issues of statistical power have been debated by investigators studying human subjects (Bryden et al, 1994;Segalowitz, Berge, Lawson, & Brown, 1994). Because there are so few left-handed humans, a large amount of statistical power is needed to determine significant relations between lateralization and the many facets of the GBG theory.…”

Section: Discussionmentioning

confidence: 99%