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Activity Number: 456 - P-Values and "Statistical Significance": Deconstructing the Arguments
Type: Topic Contributed
Date/Time: Thursday, August 6, 2020 : 10:00 AM to 11:50 AM
Sponsor: Section on Statistical Consulting
Abstract #309634
Title: P-Values and "Statistical Significance": Deconstructing the Arguments
Author(s): Deborah Mayo* and Karen Kafadar* and Ya’acov Ritov* and Stanley Young*
Companies: Virginia Tech and University of Virginia and University of Michigan and CGStat
Keywords: P-values; statistical significance tests; replication crisis; multiplicity; methodological guidelines; Bayesian methods

In the face of today's crisis of replication, researchers, societies, and journals are advancing methodological reforms. Many are welcome, others are radical. The misuses of statistical significance tests and P-values have resulted in the most criticism. The time is right to consider the presuppositions of criticisms, the ramifications of proposed reforms, and set the stage for a balanced appraisal of alternative methods. That is the goal of our session. Panelists will consider problems not typically addressed, e.g., many of the most serious problems are due to violating assumptions in computing P-values. Some look at the policy impacts foundational disagreements have in setting methodological guidelines. Others contrast the use of P-values, confidence intervals, and Bayesian methods in general and in contexts of high dimensional data. We explain how even agreement on sources of poor replication may lead to opposing standpoints on the importance of P-value thresholds. Our overall aim is to point to new avenues for communicating the proper interpretation of P-values, and to ensure our theoretically sound statistical methodology is neither abused nor dismissed categorically.

Authors who are presenting talks have a * after their name.

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