Visual information is generally erased from the sensory registers in ________
a. 4 seconds
b. one second
c. less than one second
d. 40 seconds
Answer: c
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An experimenter tests the hypothesis that physical exercise improves mood. Subjects in the experimental group participate on Monday and Tuesday and those in the control group on Wednesday and Thursday. What is the extraneous variable?
a. the hypothesis b. the day of the week c. the exercise d. the mood (degree of happiness)
When the F-ratio is larger than 1.00, it means that:
a. a mistake has been made in the computation. b. there are large error effects present. c. the experimental manipulation probably had the predicted effects. d. the between-groups variation is no larger than would be expected by chance alone and no larger than the within-groups variance.
An assessment tool that actually measures the construct it is intended to measure can be considered ____
a. reliable b. valid c. standardized d. effective
Two of the three factors that can increase the effectiveness of punishment are _____ and _____
Fill in the blank with correct word