A Researcher Studies the Relationship Between Early Reading and Later

question 90

Multiple Choice

A researcher studies the relationship between early reading and later school achievement. She decides that a potentially important extraneous variable is IQ. In developing her groups for her study, she pairs each child who was an early reader with a child of the same IQ level who was not an early reader. The control technique she used was:

• A) Holding the extraneous variable constant
• B) Statistical control
• C) Matching
• D) Random assignment

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