What evidence connects political leanings to biological measurements?

a. Speed of action potentials correlates with attitudes toward immigration

b. Brain volume divided by body volume correlates with attitudes toward taxation.
c. Responses to sudden noises correlate with attitudes toward military force.
d. Frequency of eye movements correlates with attitudes toward global warming.

c

Psychology

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When two or more groups are present in an experimental design, and in order to help avoid any systematic variation other than that caused by the independent variable on the behavior of interest, the researcher

a. randomly assigns participants to groups. b. provides a different independent variable for each group. c. measures a different dependent variable for each group. d. assigns the same subjects to all groups.

Psychology

In a frequency distribution the more intervals the better, regardless of whether some intervals have zero frequency

Indicate whether the statement is true or false

Psychology