Which one of the following statements describes the Stiles-Crawford effect?
A. Photons are some frequencies are less likely to be absorbed by a photo receptor than those at other frequencies.
B. Photons arriving near the edge of the pupil are less likely to be absorbed.
C. When a photon is absorbed, its effect on a photo receptor is the same regardless of the photon's wavelength.
D. Only two-thirds of the photons absorbed by a photo receptor actually result in a response.
Ans: B. Photons arriving near the edge of the pupil are less likely to be absorbed.
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When we sort subjects only into those who improved their performance over time, worsened their performance over time, and stayed the same, we have
a. a one-way classification. b. a two-way classification. c. a contingency table. d. a set of ordered data.
Which statement accurately describes the relationship between stress and health? a. Stress reactions increase vulnerability to disease because the immune system is strengthened
b. Stress reactions directly cause infections in the body. c. Stress reactions occur after the immune system's strength has been decreased by other factors. d. Stress reactions decrease the immune system's efficiency and thereby increase vulnerability to disease.
Simple prototypes can be taught by means of exemplars, or pointing out examples that fit and those that do not. What are these examples referred to as?
a. positive or negative reinforcers c. positive or negative outcomes b. positive or negative instances d. all of these
Which of these is most likely to be a job for a human factors psychologist?
a) designing speed controls for a new car b) developing a family leave personnel policy c) deciding which tests to use in selecting employees d) creating work schedules to be used when a plant goes into 24-hour-a-day production