Using a factorial design, a researcher conducted an experiment to determine how prior vocabulary knowledge and a new reading program influence students' reading comprehension. The new reading program is the experimental treatment, and the existing reading program is the control treatment.
a. Identify what would be a main effect in this experiment, and define what is meant by a main effect.
b. Identify what would be an interaction effect in this experiment, and define what is meant by an interaction effect.

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The Answer of Using a factorial design, a researcher conducted an experiment to determine how prior vocabulary knowledge and a new reading program influence students' reading comprehension. The new reading program is the experimental treatment, and the existing reading program is the control treatment.
a. Identify what would be a main effect in this experiment, and define what is meant by a main effect.
b. Identify what would be an interaction effect in this experiment, and define what is meant by an interaction effect.

Using a Factorial Design, a Researcher Conducted an Experiment to Determine