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Minacce alla validit degli esperimenti

Problema della confusione delle variabili: se la var. indipendente si confonde con un'altra variabile, allora l'esperimento privo di validit interna.In altri termini, occorre stabilire con precisione quale variabile ha avuto effetto sulla var. dip.Modi per ridurre la confusione delle variabil

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Minacce alla validit degli esperimenti

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