Sandra has a very small head in contrast with the proportions of the rest of her body. Since otherwise she is a normal baby, her pediatrician would be astute in asking her mother

Have you been using pesticides on your lawn, lately?
Have you recently had a large number of X-rays to diagnose a health
problem?
Do you have a urinary tract infection that you haven't told me about?
Have you been exhausting yourself in the gym lately?

Have you recently had a large number of X-rays to diagnose a health
problem?

Psychology

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Berko's (1958) research on children's understanding of morphology indicated that

A) preschoolers and first graders can form correct plurals and past tenses of nonsense words. B) first graders can form correct plurals of nonsense words, but they cannot create past tenses. C) children's understanding of plurals and tenses for nonsense words does not develop until they have achieved formal operations. D) first graders can form correct plurals of tangible, concrete objects, but not of imaginary objects.

Psychology

Having good friends is associated with

a. lower rates of depression. c. greater difficulty coping with stressful situations. b. low self-esteem. d. lower rates of prosocial behavior.

Psychology