Reproductive rates are highest among the most aggressive Yanomami men, and the least aggressive Waorani men. What does this pattern indicate?
A. Cultural practices interact with survival and reproductive fitness.
B. That aggression in men is a strategy for high genetic fitness
C. Reproductive fitness is not affected by the environment.
D. That aggression is a poor evolutionary strategy
Answer: A
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Subjects are randomly assigned to experimental and control groups to:
a. make the two groups as similar as possible in all major characteristics. b. eliminate the placebo effect. c. establish possible correlations between the independent and dependent variables. d. eliminate experimenter effects.
The United States leads the world in number of years of healthy life expectancy
Indicate whether the statement is true or false
Which of the following procedures would you probably use if you wanted to decrease an excessive behavior?
Question options: operant extinction respondent extinction shaping fading