Dr. Hans Zarkoffis testing groups of teenagers and senior citizens on their ability to imagine the rotation of objects in space. He finds that the teenagers perform much better than the seniors. Dr. Zarkoffinitially suspects that his results are due to the declining mental ability of the senior group, but then realizes that the teenagers have had more experience with video games. This is an
example of a____effect.?
a. ?cohort
b. ?mortality
c. ?history
d. ?testing
ANSWER:
a
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A sample of n = 25 scores is selected from a population with a variance of ?2 = 16, and the variance is computed for the sample using n – 1 . The sample variance probably will be smaller than 16
Indicate whether the statement is true or false
Naturalistic observation, case studies, and surveys are all examples of:
a. experimental research b. descriptive research c. double-blind research designs d. single-blind research designs
Which sequence of events in emotional responses is characteristic of the commonsense view of emotion?
a) stimulus --> emotion --> physiological changes b) stimulus --> physiological changes --> emotion c) physiological changes --> stimulus --> emotion d) stimulus --> emotion AND physiological changes (simultaneous)
51. Famed primatologist Jane Goodall earned international notoriety for her studies of chimpanzees. Much of her research was spent observing the animals from afar without interfering with their day to day lives
This type of research, called __________ observation, is important because it allows observation of behaviors without interfering with or changing those behaviors. a. case b. naturalistic c. laboratory d. external