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TY - GEN ID - cogprints824 UR - http://cogprints.org/824/ A1 - Chow, Siu L. Y1 - 1988/// N2 - I describe and question the argument that in psychological research, the significance test should be replaced (or, at least, supplemented) by a more informative index (viz., effect size or statistical power) in the case of theory-corroboration experimentation because it has been made on the basis of some debatable assumptions about the rationale of scientific investigation. The rationale of theory-corroboration experimentation requires nothing more than a binary decision about the relation between two variables. This binary decision supplies the minor premise for the syllogism implicated when a theory is being tested. Some metatheoretical considerations reveal that the magnitude of the effect-size estimate is not a satisfactory alternative to the significance test. KW - statistical significance KW - effect size KW - statistical power KW - meta-analysis KW - modus tollens KW - the sample-size problem KW - theeffect-size problem KW - the substantive-significance problem KW - theory corroboration TI - Significance Test or Effect Size? SP - 105 AV - public EP - 110 ER -