At Folger University, Drs. Chase and Sanborn are conducting an experiment on the effects of caffeine on memory. Participants are randomly assigned to a caffeine or a no-caffeine group; their recall of items on a word list is later assessed. Which pair correctly identifies a variable in this experiment?
What will be an ideal response?
Caffeine-independent variable
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Researchers have found that different species of birds differ in terms of how much they depend on food they have stored to get through the winter. What factor is related to depending on and finding stored food?
a. overall brain size b. relative size of the cortex c. relative size of the amygdala d. relative size of the hippocampus
Bahrick found that after 35 years, people could recognize 90% of their high school classmates names and photographs from high school pictures, about the same as recent graduates. This suggests that decay does not greatly impact__________
a) high school students. b) long-term memory. c) short-term memory. d) working memory.
Posttraumatic stress disorder (PTSD) occurs
a) more frequently in men than in women. b) more frequently in women than in men. c) with the same frequency for men and women. d) does not occur for women. It is exclusively a male disorder.
When Aria placed her 3-month-old son on his back, she noticed that he extended his arm and leg on one side and flexed the other arm and leg. This scenario illustrates the ________.
A. walking reflex B. tonic neck reflex C. Darwinian reflex D. Moro reflex