According to your textbook, what is the most likely explanation for why first-born children tend to have higher IQ's?
A) prenatal exposure to flu
B) they are the oldest sibling and tutor younger siblings
C) temperature during infancy
D) exposure to sunlight during infancy
Answer: B
Rationale: Children born during the first part of the calendar year have higher verbal and mathematical aptitude, according to a number of sources. It appears that this is because children who are the oldest in their class get the most out of school, perhaps because they are, on average, slightly more mature and prepared to learn.
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Imparting health information to school-age children is difficult because they
A) are far more concerned about schoolwork, friends, and play. B) have time perspectives that relate past, present, and future. C) are typically rebellious and ignore the suggestions of authority figures. D) are skeptical of advertising, which makes a huge effort to promote healthy living.
Zookeeper Ross knows that he shares some of his genetic makeup with the chimpanzee, Chumley. You could tell Ross that between __________ percent of their DNA is identical
A) 20 and 25 B) 50 and 55 C) 75 and 80 D) 98 and 99