Question :
21.Hans and Franz lift weights at their local gym. When : 1231201
21.Hans and Franz lift weights at their local gym. When their trainer adds a two-pound weight to Hans’s normal fifty-pound load, Hans immediately notices. However, when the same two-pound weight is added to Franz’s normal two-hundred-pound load, he isn’t aware of the extra weight. The difference in Hans’s and Franz’s experience is consistent with
A)absolute threshold theory.
B)difference threshold theory.
C)Weber’s Law.
D)signal-detection theory.
E)Gestalt laws of perceptual organization.
22.Weber’s constant for brightness of lights is
A)one-seventh.
B)one-tenth.
C)one-sixtieth.
D)one-fiftieth.
E)one-twentieth.
23.A recipe requires ten grams of salt. According to Weber’s constant for saltiness, which is 1/5, how much more salt must a chef add to make the recipe noticeably saltier?
A)1/5 of a gram
B)2 grams
C)5 grams
D)10.5 grams
E)1/5 of a gram squared
24.According to Weber’s Law, a person would be most sensitive to changes in which sensation?
A)the loudness of sounds
B)the heaviness of weight
C)the saltiness of food
D)brightness of lights
E)the pitch of sounds
25.The idea that the threshold for sensing a stimulus depends not only on the properties of the stimulus itself but on the level of background stimulation, as well as characteristics of the perceiver, is explained by
A)Weber’s Law.
B)the volley principle.
C)opponent-process theory.
D)signal-detection theory.
E)sensory adaptation.
26.Which of the following is a psychological factor that influences a person’s threshold for determining a signal?
A)The sensitivity of their visual system
B)Their level of fatigue
C)Their physical health
D)The sensitivity of their auditory system
E)Their motivational state
27.Signal detection theory predicts all but which of the following?
A)Arturro more often notices the aroma wafting from his neighbor’s apartment after he has eaten than when he is hungry.
B)During allergy season, Bettina’s sense of smell becomes duller.
C)When her stereo is on, Carolyn does not notice an increase in her neighbor’s television volume, but, when she is reading a book, Carolyn immediately notices the increased volume.
D)As he has gotten older, David notices that his sense of taste has diminished.
E)Etyda walks the same route every day. Now that the days are getting shorter and part of her walk is in the dark, Etyda notices more sounds that signal possible danger.
28.According to signal detection theory, the threshold for detecting a signal depends on
A)the properties of the stimulus, like its intensity.
B)the amount and type of background noise.
C)both the properties of the stimulus and the amount and type of background noise.
D)the biological and psychological characteristics of the perceiver.
E)the properties of the stimulus, background noise, and biological and psychological characteristics of the perceiver.
29.When sensory systems become less sensitive to unchanging stimuli, it is called
A)accommodation.
B)sensory adaptation.
C)precognition.
D)threshold degradation.
E)subliminal perception.
30.Other factors being equal, which sensory stimulus is least likely to lead to sensory adaptation?
A)the wail of a loud car alarm
B)the pressure of wearing a new ring on one’s finger
C)the intense odors of a cattle farm
D)the pressure of wearing a new bracelet on one’s wrist
E)the temperature of water when entering a pool
