An experiment produces a between-groups variance estimate (mean square) of 25 and a within groups variance estimate (mean square) of 5 . The F value is therefore
a. .2.
b. 25.
c. 10.
d. 5.
d
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Some theorists propose that autism is related to elevated levels of
a. education. b. praise. c. endorphins. d. serotonin
Which of the following is a characteristic of Piaget's concrete operations stage of cognitive development?
a) Children are unable to understand the other person's point of view. b) Children develop the ability to think logically about abstract concepts, such as peace and freedom. c) Instead of thinking a problem through, children tend to rely on trial-and-error strategies. d) Children understand the world through their sensory perceptions and motor behaviors.
Regarding a baby’s adaptation to labor and delivery, stress hormones __________
A) endanger the newborn B) arouse the infant into alertness C) cause the cervix to thin and the uterine wall to contract D) cause the mother to breathe deeply, increasing the infant’s oxygen supply
________ proposed the idea that bodily fluids, or humors, were associated with different temperaments
a. Freud b. Hippocrates c. Bandura d. Kagan e. Socrates