A researcher using a crossover design can safely conclude that the treatment which produces the greatest change in the value of the dependent variable is the most effective of the ones being studied.

Question

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In a crossover design, while one can observe the effects of different treatments on the dependent variable, attributing effectiveness solely based on the greatest change does not account for individual variability, potential carryover effects, or the possibility that the observed change might not directly translate to "effectiveness" in a broader or long-term context.

A Researcher Using a Crossover Design Can Safely Conclude That