The t ratio, since it is a parametric test, makes no assumptions regarding the shape of the population distribution from which the samples have been selected
Indicate whether the statement is true or false
F
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Responses that are followed by a reinforcer become more likely in the future. This is known as what?
a. The equilibrium principle b. The law of effect c. Temporal contiguity d. The all or none law
Based on the suicide information presented in the textbook, if a friend talks about committing suicide, you should ____.?
a. ?try to change the subject and avoid bringing up the topic again b. ?keep track of the friend’s moods, paying particular attention when your friend seems the most depressed c. ?attempt to help your friend yourself without bringing others into the problem d. ?ask direct questions about your friend’s plan for suicide
If a child's hearing impairment is not detected until about age 1, the first indication is often noticed when the child:
a. begins to use hand gestures b. begins to rock back and forth while sitting up c. frequently seems startled when people approach d. displays a strong interest in toys that vibrate
Repeated measures designs are often preferable to using between-subjects designs because they
a. guarantee equivalence of subjects. b. require fewer subjects. c. are more convenient and efficient. d. all of the above