A meteorologist is watching the Doppler radar screen at the National Weather Service Office and notices evidence of severe rain and wind. However,
he fails to recognize a pattern of counterclockwise wind movement that might indicate a tornado and thus fails to issue a warning. Several minutes later, a town 50 miles from the office is destroyed by a tornado. In terms of signal detection theory, what type of error has been made in this example?
a) true negative
b) true positive
c) false negative
d) false positive
ANS: c
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We become aware of the process of visual perception
a. before the process is initiated. b. during the process. c. only after the process is completed. d. only if we stop and think about what we are perceiving while the process is ongoing. e. only if something halts it before it is completed.
Breastfed babies in poverty-stricken regions of the world
A) are more likely than bottle-fed babies to be malnourished. B) should be given a vitamin-enriched supplement of commercial formula at least weekly. C) are far more likely than bottle-fed babies to survive the first year of life. D) should be breastfed until age 9 months, with solid food added at 3 months of age.