Sexual maturation for human males typically proceeds in a certain manner. Which of the following typically occurs last (i.e., Stage 5)?
A) Sperm production begins.
B) Hormone production begins.
C) Scrotum becomes darker in color.
D) Growth of facial and chest hair begins.
D) Growth of facial and chest hair begins.
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A rat with hippocampal damage has difficulty with the Morris water maze because it ____
a. loses its motivation to find the platform b. cannot remember how to swim c. has difficulty remembering where the platform is from trial to trial d. develops a water phobia
The authors mentioned the interesting correlation between natural red hair and lower pain thresholds compared to persons with other natural hair colors. This is most likely to be due to the fact that
A) genetic factors that impact pain threshold are also somehow related to hair color. B) natural hair color causes people to have an increased or decreased pain threshold. C) natural pain thresholds cause people to be born with different natural colors of hair. D) None of the above was mentioned by the authors as an explanation of the correlation between natural hair color and pain threshold.
One-sample z tests are seldom used because _____
a. the population mean and standard deviation are seldom both known b. the sample mean and standard deviation are seldom both known c. the calculations are too complex d. no conclusions can be drawn from the results of the test
Ineffective coping
A) is largely problem-centered. B) reduces emotional distress. C) is largely self-blaming, impulsive, or escapist. D) attempts to balance problem- and emotion-centered techniques.