The microscope was invented by
A. Anton van Leeuwenhoek.
B. Camillo Golgi.
C. Santiago Ramón y Cajal.
D. Vernon Mountcastle.
Answer: A
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Which group has the greatest risk for a variety of pregnancy and birth complications?
A. adolescents age 13 to 15 B. adolescents age 15 to 20 C. women age 20 to 25 D. women age 30 and older
Frotteurism is __________.
A. sexual arousal by rubbing one's genital area against a nonconsenting person B. sexual arousal in a male achieved exclusively through masturbation C. the inability of males to be aroused by anything except inanimate objects D. sexual arousal in males by the thought of having their sex organs removed
Which of the following correlation coefficients represents the variables with the weakest degree of relationship?
a. +.99 b. 1.00 c. +.01 d. .59
Sam is suffering from a poor sleep pattern. The doctor has told him that he must be in bed every night by 10pm and he must wake up every morning at 6am, with no exceptions. Sam takes a sleeping pill to help him get to sleep at 10pm every night but on the weekends he stays in bed until 10 or 11 am. Using the principles of operant conditioning to modify his sleep pattern, Sam might:
A. set two alarm clocks to go off at 6am so the noise will wake him. B. take a stimulant to rouse him out of bed in the morning. C. get up one hour earlier each weekend until he reaches 6am. D. allow himself to sleep in on weekends only