In a signal detection task josh often indicates he

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Chapter 3- Multiple Choice.pdf

In a signal detection task Josh often indicates he has seen the signal even from LIB MISC at MCPHS University

21 .   In a signal detection experiment , a tendency to say " yes " leads to _ ____ , whereas a tendency to say " no " leads to _ _ ___.
A ) many false alarms ; few misses
B ) few false alarms ; many misses
C ) few misses ; few false alarms
D ) many misses ; many false alarms
22 .   David is holding a surprise birthday party for Ellen and has asked Fredo to stand outside his apartment door to signal when Ellen is approaching . According to signal detection theory , if Fredo is more concerned about noticing when Ellen is approaching than about being incorrect , he is likely to adopt a _____ decision criterion and thus have more _ ____ than _ ____.
23 .   In a signal detection task , Josh often indicates he has seen the signal , even when he is not sure . Josh is using a criterion that will result in _____ false alarms and _____ misses .
24 .   According to signal detection theory , if your life depended on an X- ray technician 's ability to detect a cancerous tumor , you would want her to have a _____ detection criterion , which would result in a high rate of _____.
25 .   According to signal detection theory , a " yea " sayer has many hits and many _____ , where as a " nay " sayer has _____.
A ) correct rejections ; many false alarms and many misses
B ) false alarms ; many correct rejections and many misses
C ) false alarms ; few misses and many correct rejections
D ) correct rejections ; few hits and few correct rejections
26 .   Based on signal detection theory , a " yea " sayer is to _____ as a " nay " sayer is to _____.
27 .   Based on signal detection theory , a " yea " sayer is to _____ as a " nay " sayer is to _____.
28 .   When studying the difference threshold , the stimulus that remains the same across trials is called the _____ stimulus .
29 .   The difference threshold is the minimum difference between two stimuli detected _____ percent of the time .
A ) 100
B ) 75
C ) 50
D ) 25
30 .   Another name for the difference threshold is the _____ noticeable difference .
31 .   Don is in an experiment in which the researcher has him hold a constant weight in one hand . The researcher varies the amount of weight in Don 's other hand , and each time the weight is changed , Don has to determine whether it differs from the constant weight . Don is participating in an experiment measuring :
32 .   _ ____ states that for each type of sensory judgment that we make , the measured just noticeable difference ( jnd ) is a constant proportion of the standard stimulus value used to measure it .
33 .   If the Weber fraction for lifted weights is 1/50 and the standard stimulus used to determine the just noticeable difference ( jnd ) is 500 pounds , the jnd would be _____ pounds .
A ) 50
B ) 5
C ) 10
D ) 25
34 .   Which constant fraction of a standard stimulus would indicate the ability to detect smaller differences between the same stimuli ?
35 .   According to Weber 's law , if the difference threshold for a 10 - pound weight were . 20 pounds , the difference threshold for a 50 - pound weight would be _ _ ___ pound ( s ) .