The belief that our society's obsession with cleanliness and sterile environments may actually increase the risk of asthma is referred to as
the sterile environment theory.
the hygiene hypothesis.
the spore theory.
the immunity hypothesis.
the hygiene hypothesis.
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For which of these would a 2 x 2 table not be a useful cognitive aid?
(a) finding out if gender and aggressiveness in a group of children are related (b) finding out if there is a relationship between IQ and school grades in a group of children (c) finding out how close the relationship is between Johnny and his brother (d) finding out if there is a relationship between population and the crime rate in the 100 largest cities in the US (e) all of the above
A reflex is best defined as
a. an inevitable, uncontrollable response to stimuli. b. an inborn pattern of behavior evoked by external stimuli. c. a temporary, complex change in behavior. d. a behavior that occurs as the result of experience.