When Ann went to her doctor, he gave her a hearing test. He presented her tones through earphones. The tones started at a low intensity and then became louder. The doctor asked Ann to raise her hand whenever she started to hear a sound. Ann's _______ was being tested.
a. auditory convergence
b. absolute threshold
c. refractory threshold
d. difference threshold
Ans: b. absolute threshold
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Which of the following capabilities is listed in the text as an example of where a baby's goal-directed behavior comes from?
enhanced awareness of cause and effect memory for actions already completed understanding of other people's intentions All of the answers are correct.
When a person thinks of a concept such as "bird," the person usually ________
a. constructs a mental list of key attributes of a bird b. has to identify the particular type of bird before a concept of a bird can be generated c. thinks of a prototype of a bird d. eliminates all of the attributes of being a nonbird
Nerves in your brain and spinal cord are part of the
A. central nervous system. B. peripheral nervous system. C. autonomic nervous system. D. sympathetic nervous system.
Dr. Simmons tests the hypothesis that students who study in the room where they take their tests will perform better on the tests than students who study in other rooms. She requires one group to study in the classroom where the exam is given and another group to study in the library. All students take the test in the classroom, and their test performance is compared. In this example, test performance is the __________.
A. dependent variable B. independent variable C. manipulation D. control group