A result is statistically reliable if
a. the change observed in the independent variable is not due to chance factors.
b. the change observed in the dependent variable would only rarely occur by chance.
c. a repetition of the experiment yields the same result.
d. inferential statistics are used to evaluate the outcome.
D
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If you change a baby's position, and the infant's reaction is to arch the back, fling the arms and legs out, and then bring them back toward the chest, the ____ reflex has occurred
a. grasping b. Moro c. falling d. rooting
In a task where the observer compares the weight of a constant comparison stimulus with the weights of a changing stimulus using the method of limits, the interval of uncertainty is operationally defined as
a. the mean of the upper and lower thresholds. b. the difference between the upper and lower thresholds. c. the distance between the means of the signal and noise distributions. d. the mean of the stimulus values corresponding to the last "heavier" response and the first "equal," response.
If an organism emits a response only in the presence of reinforced stimuli and not in the presence of unreinforced stimuli, then the organism is displaying:
a. discrimination c. extinction b. spontaneous recovery d. generalization
In girls, menarche
a. marks the beginning of menstruation. b. causes estrogens and androgens to stimulate secondary sex characteristics. c. follows the first ovulation. d. makes estrogen production less predictable.