After playing tennis, Briana hurries home because her mother always bakes Briana's favorite scones on Saturday afternoons
As Briana opens the front door, she notices the kitchen trashcan smells horribly, but her mother says, "I don't smell anything." The most likely explanation for this is that Briana's mother ________
a. experienced a decline in her sense of smell as she reached middle age.
b. has a different absolute threshold for olfaction than does her daughter.
c. adapted to the smell of the trashcan because it is an unchanging stimulus.
d. is a naysayer, while Briana is a yea-sayer.
Answer: c
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Darwin believed that emotional expressions began as ________ that came to have evolutionary value because they ________
a. physiological reactions; convey emotional states to other members of the species b. physiological reactions; increased the efficiency of bodily reactions c. communication devices; increased the efficiency of bodily reactions d. random mutations; convey expectations to other members of the species
A model differs from a theory in that it
a. explains why a particular effect occurs b. is constructed from physical objects c. can not be tested by research d. is less strongly supported by empirical evidence e. explains how but not why concepts are related