The interaction of the independent variable (or treatment) with some other variable (e.g., a variable represented by history or maturation) poses a threat to the external validity of true experiments. What are some solutions to problems of (a) sample selection-X interaction, (b) maturation-X interaction, and (c) history-X interaction? (Recall that X is an independent variable.)

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The Answer of The interaction of the independent variable (or treatment) with some other variable (e.g., a variable represented by history or maturation) poses a threat to the external validity of true experiments. What are some solutions to problems of (a) sample selection-X interaction, (b) maturation-X interaction, and (c) history-X interaction? (Recall that X is an independent variable.)

The Interaction of the Independent Variable (Or Treatment) with Some