To conclude that watching television violence gives rise to aggressive behavior in children, researchers need to show that children who watch television violence behave aggressively and that children who do not watch television violence do not behave aggressively. This is called___

Elimination of covariation of cause and effect

Explanation:

Covariation of cause and effect involves establishing that there's a direct relationship of cause and effect between variables, In this cause, television violence and aggressive behavior in children. Covariations of cause and effects makes known that the cause had a measurable effect. What occurs here is that the researchers tries to show a causal relationship between variables. By not showing that, for example (from the question), children who watches television violence behaves aggressively and vice versa leads to elimination of cause and effects.

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