Brittney believes that her son Leo will start walking around the time he is nine months old because her two older identical twin sons both started walking around this same age. Is her prediction likely to be correct?
A. Yes, because all of the children were raised in the same environment and environment largely determines motor development.
B. Yes, because all male children begin walking around nine months and females around one year.
C. No, because he is less genetically similar to his twin brothers and genetics largely determine early motor development.
D. No, because first-born children typically walk earlier than their later born siblings.
Answer: C
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Answer the following statement true (T) or false (F)
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a. are much better at recognizing faces of other races than their own race. b. show a consistent other-race effect. c. are able to recognize the faces of people from other races better if they are in a negative mood. d. exhibit all of these.
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Tyrell wants to teach his two daughters, Sarah and Mia, to practice their golf swings every day. Each time after Sarah finishes practicing, he gives her $5, and each time after Mia finishes practicing, he gives her a handful of M&Ms. Sarah is receiving a __________ reinforcer, and Mia is receiving a __________ reinforcer.
A. secondary; secondary B. primary; primary C. secondary; primary D. primary; secondary