Which of the following statements about handedness is true?
a) Identical twins are more likely than ordinary siblings to differ in handedness.
b) In adulthood, people who are right-handed have lower life expectancy and are more likely to die in accidents.
c) The prevalence of left-handedness in some African countries is as high as 50%.
d) One-half of left-handers process language in both hemispheres of the brain rather than primarily in the left hemisphere.
Answer: a
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A. Changes in the laws and increased financial security of women B. Increased education and marrying too young C. Lack of religiosity and cohabitation D. Lack of financial support from a spouse and communication
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