The Skinner box was designed so that
a. he could punish his daughter, Deborah.
b. rats could eliminate painful stimuli.
c. animals could press a lever to receive food.
d. gerbils could make their way through a maze to a food pellet in the box.
e. cats could pull a string to open the door to the box.
c. animals could press a lever to receive food.
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Your uncle returns home after visiting a sleep clinic. He says the sleep specialists diagnosed him as suffering from narcolepsy. Which of the following sets of symptoms probably led to his decision to seek an evaluation at the sleep clinic?
a. loud snoring and violent leg movements during sleep b. early morning waking and an inability to get back to sleep c. irresistible sleep attacks and sudden loss of muscle tone for brief periods of time d. inability to breathe and sleep at the same time and difficulty getting to sleep
What percentage of U.S. births take place in freestanding birthing centers?
10 25 50 5