Journal
PSYCHONOMIC BULLETIN & REVIEW
Volume 8, Issue 4, Pages 847-850Publisher
PSYCHONOMIC SOC INC
DOI: 10.3758/BF03196227
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Comments about previous studies indicate that the interpretation of significance levels by psychological researchers is unequivocally dictated by a binary decision-making framework. In particulars confidence in a p level would drop abruptly just beyond the fateful .05 level (cliff effect). A replication of Rosenthal and Gaito's (1963) experiment on the degree of confidence in p levels shows that these claims should be moderated. Detailed analysis of individual curves reveals that the attitude of researchers toward p values is far from being as homogeneous as might be expected. However, most psychological researchers in our study rated graduated confidence judgments, as either exponential or linear. Only a minority of all-or-none respondents exhibited an abrupt drop in confidence.
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