Researchers using naturalistic observations to study an animal colony must avoid making friends with the animals to minimize the
a. placebo effect.
b. problem of sampling bias.
c. effect of the independent variable on the dependent variable.
d. effects of the observer on the observed.
D
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Which attribute is NOT one of the biological explanations for the origins of sexual orientation?
A. Genetics B. Hormones C. Complications during birth D. Brain anatomy
Bees and some birds can see ______
a. infra-red light c. x-rays b. ultra-violet light d. sound vibrations
Your parents have been married for 30 years, but they really do not do much together any more. You can tell that they like each other, but the romance seems to be gone
According to Sternberg, what type of love do you think they are experiencing at this time? a. romantic love b. companionate love c. fatuous love d. empty love
The two major divisions of the peripheral nervous system are the _______ nervous systems
a. sympathetic and somatic c. autonomic and somatic b. sympathetic and central d. sympathetic and parasympathetic