What z-score value separates the highest 10% of the scores in a normal distribution from the lowest 90%?
a. z = 1.28 c. z = –1.28
b. z = 0.25 d. z = –0.25
A
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Children who have well-developed pretending skills
a. have advanced abilities to take the point of view of others. b. are rather solitary and not well-liked by peers. c. have relatively undeveloped communication skills. d. have relatively inflexible approaches to problem solving.
In general, when an experimenter does a two-way ANOVA, he has no interest in which levels of the variable have a real effect
Indicate whether the statement is true or false
Which of these is NOT cited in the text as a reason for joining groups?
a. the chance to affiliate b. the process of social comparison c. social support d. the opportunity for individual power
Sandra Scarr and Kathleen McCartney proposed the theory of genotype ? environment effects. Which subtype occurs in biological families because parents provide both genes and environment for their children?
a. passive genotype ??environment effects b. evocative genotype ??environment effects c. active genotype ??environment effects d. inactive genotype ??environment effects