The concept of a rejection vs acceptance-support design relates not to any objective characteristic of the experimental design but only to the Theoretical orientation of the investigator. If the theory of the investigator's choice predicts no differences, the design is an acceptance-support design.
References
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BinderA.Further considerations on testing the null hypothesis and the strategy and tactics of investigating theoretical models. Psychol. Rev., 1963, 70, 107–115.
2.
GrantD. A.Testing the null hypothesis and the strategy and tactics of investigating theoretical models. Psychol. Rev., 1962, 69, 54–61.