Which of the following is an advantage of within-subjects designs over between-subjects designs?
a. carry-over effects are more likely
b. they require fewer participants
c. they have less power
d. confounding is less likely
e. participants are assigned to conditions randomly
B
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Almost every time Amos articulates the word "da," his father picks him up with joy, smiles, and praises his son for trying to say "dad." The father's behavior reinforces Amos's behavior. Which theory of language acquisition is this an example of?
A. learning theory approach B. universal grammar C. nativist approach D. infant-directed speech
When a developing embryo is exposed to higher levels of testosterone, this will lead to
a. the development of the fallopian tubes. b. the development of the uterus. c. the growth of the Mullerian bulbs. d. the differentiation of the Wolffian system.
After a word's letters are changed into sound, we must:
A. analyze each phoneme B. vocalize the sound C. analyze words D. create a permanent record of the letters and its sound
Ekman conducted a number of studies of facial expressions and found that
A) expression varies from culture to culture. B) there are too many emotions to classify. C) seven primary emotions are almost universal. D) common expressions exist only for happiness.