What is the capacity of short-term memory?
a) five, plus or minus two letters
b) five, plus or minus two engrams
c) seven, plus or minus two chunks
d) seven, plus or minus two numbers
ANS: c
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An experimenter collected data on how well a study guide improved grades on an exam taken late in the semester compared to an exam taken early in the semester. Using a related sample means t test, the results showed that later grades were higher than early grades (t(74) = 3.64, p < .05). Which of the following was NOT an advantage of this design?
a. The design controlled for students who did poorly both times. b. The design controlled for extraneous variables like intelligence levels. c. The design controlled for carry-over effects from already having taken one exam when the second exam was administered. d. All of the above are advantages of this design.
Donatella participates in a study and is asked to view a series of images that are likely to provoke strong emotion: a father caressing his newborn baby; a child crying at his mother’s funeral; and a shark ferociously attacking a seal. While she views these images, a PET scan monitors her brain activity. What is the PET scan likely to show??
a. ?A specialized region of the prefrontal cortex shows robust activity for all of her emotions. b. ?Separate cortical “emotion centers” respond to each of her emotions. c. ?The prototypic “emotional pattern” of activity is observed in response to all of her emotions. d. ?Distinct patterns of activity will be observed for each of her emotions.
In addition to being lethargic during the birthing experience, babies of heavily medicated mothers
a. exhibit unmistakable signs of mental retardation. b. forget learned responses acquired in the womb. c. emit behaviors that inhibit the mother's bonding. d. show long-delayed jealousy reactions to later siblings.
What student activity provides a useful service to agencies and communities?
a. Teaching assistantship b. Research assistantship c. Field Experience d. Independent studies