Choices: Experimental; Control, Independent; Dependent; Random The researcher's hypothesis is that a positive reward will increase a student's performance on their next vocabulary quiz. The students in one classroom receive a specific reward each time they score above 90% on their vocabulary test. Students of the same grade in another classroom get the same assignments and quizzes but are not given the reward. a The reward is the b. The children receiving the reward are said to be in the receiving a reward form a Because change in performance is expected to be the effect of reward, the measurement of vocabulary (the quiz) is the variable because it is expected to cause a change in behavior. group and the children not group for comparison in the measure of effect. C. variable.

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