The part of the eye that changes shape to adjust for an object's distance is the
a. lens.
b. pupil.
c. cornea.
d. retina. e. iris.
a
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Which part of the brain is implicated in disorders affecting motor behavior?
a. hypothalamus b. hindbrain c. basal ganglia d. limbic system
Stimulants are ________
a. drugs that speed up activity in the central nervous system. b. drugs capable of influencing perception, mood, cognition, or behavior. c. drugs that slow down activity in the central nervous system. d. drugs derived from the opium poppy that relieve pain and produce euphoria.
Imagine being quizzed by your teacher on schedules of reinforcement. You are asked to name the schedule that generates the highest rate of responding and the greatest resistance to extinction
You are told further that gamblers are often under the control of this schedule. You should respond that this describes a ________ schedule of reinforcement. a. fixed-interval b. fixed-ratio c. variable-interval d. variable-ratio
The embryonic period is characterized by methodical cell division and the attachment of the organism to the wall of the uterus
Indicate whether the statement is true or false