____ is not controlled for in time series designs
a. Normal fluctuation.
b. Changes between pretest and posttest.
c. Ex post facto confounding.
d. Attrition of subjects.
A
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How do risk and protective factors affect a relationship?
a) They increase or decrease the likelihood of a variable effect. b) They increase or decrease the number of participants. c) They increase or decrease the interaction between the experimenter and the participants. d) They increase or decrease experimental conditions.
A bat can determine whether an object is to the left or the right of the bat's location by ______.
A. computing the Doppler effect on amplitude differences B. a comparison of the returning echo to its two ears C. using differential signals at different frequencies D. comparing the CF component to the FM component