Dr Hoff Is Curious as to Whether Children in a Kindergarten

question 10

Multiple Choice

Dr. Hoff is curious as to whether children in a kindergarten classroom will be friendlier after talking about friendship. Immediately before and after the discussion, she has several undergraduate research assistants code the "friendliness" of a group of kindergarteners. Which of the following threats should Dr. Hoff be most concerned about?

• A)History
• B)Maturation
• C)Instrumentation
• D)Testing

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