Regarding sound waves, which of the following statements is TRUE?
a. Sound waves are produced by vibrating objects.
b. The amplitude is the number of sound waves per second and corresponds to the perceived pitch of a sound.
c. Compressions are the valleys within the sound waves.
d. Rarefactions are the peaks within the sound waves.
A
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Mae is studying for an exam on the action potential. She writes in her notes that the sodium channel closes ______.
A. when the electrical gradient for sodium is eliminated B. after the neuron reaches threshold C. at the peak of the action potential D. as a result of the refractory periods
All other things being equal, an animal trained on which of the following schedules of reinforcement should experience extinction most quickly when the reinforcement is removed?
a. Fixed-interval schedule b. Continuous schedule c. Variable-ratio schedule d. Variable-interval schedule
Individuals diagnosed with schizophrenia who are given amphetamines, show
a. no changes in their symptoms. b. a decrease in catatonic symptoms. c. an increase in the expression of their symptoms. d. an increase in symptoms related to language, but a decrease in inappropriate affect. e. a decrease in symptoms related to language, but an increase in inappropriate affect.
Self-esteem became seen as a more uniformly positive trait during which decade?
a. 1960s b. 1970s c. 1980s d. 1990s