?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Significance+Test+or+Effect+Size%3F&rft.creator=Chow%2C+Siu+L.&rft.subject=Cognitive+Psychology&rft.subject=Philosophy+of+Science&rft.description=I+describe+and+question+the+argument+that+in+psychological+research%2C+the+significance+test+should+be+replaced+(or%2C+at+least%2C+supplemented)+by+a+more+informative+index+(viz.%2C+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.&rft.date=1988&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=text%2Fhtml&rft.identifier=http%3A%2F%2Fcogprints.org%2F824%2F1%2FSIGTEST.htm&rft.identifier=++Chow%2C+Siu+L.++(1988)+Significance+Test+or+Effect+Size%3F++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F824%2F