Suppose you are studying the relationship between IQ and being a first born child. If you looked at two different groups - children born to middle-class families in the suburbs of Chicago and children raised in a communal setting in South America - which of the following differences would you expect to find?

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Quizplus · Accepted Answer

Any effects in intellectual ability or achievement associated with being a firstborn child are most likely associated with the child's role in the family. Simply put, the firstborn child benefits from all of the parent's attention, whereas subsequent children must share. This explanation is supported by cross-cultural research (Murray, et al., 2008). The firstborn child in a U.S. family usually is at least temporarily the only child in the home and has his or her own room and possessions, with liberal access to parents for conversation and games. In contrast, firstborn children in agriculture-based cultures, such as those studied in Kenya (LeVine, 1990), often involve communal living quarters, with the child living with older children from other families who function much like older siblings. As a result, the benefits associated with being firstborn are markedly less.

Suppose You Are Studying the Relationship Between IQ and Being