What is the process of turning abstract concepts into concrete measurements?
A. direct observation
B. indirect observation
C. construction
D. operationalization
Ans: D
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Masturbation was once thought to lead to ____
a. herpes c. heart failure b. cancer d. epilepsy
If only one sperm is needed to fertilize an egg, why are so many sperm produced by a man?
a. This ensures genetic variability of a man's offspring. b. The testicles themselves present a hostile environment for sperm as a way to ensure that the strongest sperm survive, thus most sperm die off even before ejaculation. c. All of the sperm are produced during the development of a male fetus, and so, an abundant number of sperm are needed to provide a sufficient supply for a man's lifetime. d. There are many "barriers" that confront a sperm on its journey to the egg, thus increasing the likelihood that some sperm will make their way to the egg.
One innovation in the Education for All Handicapped Children (Public Law 94-142) was that
a) psychologists were directed to use validated tests to evaluate children. b) children had the right to be tested in their home language, even if they attended an English-speaking school. c) the responsibilities of psychologists were limited to evaluating mental abilities. d) the educational rights of disabled children were acknowledged for the first time.
During an erection, which of the following tissues becomes engorged with blood, making the penis erect?
A. Cremaster muscle B. Corpus spongiosum C. Seminiferous tubule D. Vas deferens E. Tunica albuginea