An experiment is said to be __________ when neither researchers nor participants are aware of who is in the experimental or control group
A) single-blind
B) unfalsifiable
C) a placebo
D) double-blind
Answer: D
Rationale: In a double-blind study, neither the participant nor the experimenter knows the exact treatment for any individual.
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Regarding free recall of a list of items, which of the following will most likely cause the recency effect to disappear by preventing rehearsal from taking place?
a. Inserting a 30-second delay before recall b. Presenting the stimulus list at a slower pace c. Counting backward for 30 seconds before recall d. Using a very long list (greater than 30 items at one item per second)
The difference between the number of times required to learn material initially and the number of times required to relearn the same material is referred to as
a. rehearsal. c. forgetting. b. savings. d. relearning.
During childhood, obesity is especially serious among
A) girls. B) boys. C) Caucasians. D) minorities.
In Piaget's theory, the stage of cognitive development that is reached during early adolescence is usually called the:
a. concrete operational stage b. preoperational stage c. formal operational stage d. sensorimotor stage