Speaker: Professor Zoltan Dienes
Series: Department of Psychology External Speaker Seminar Series
Using Bayes to get the most out of null results
Users of orthodox statistics, including psychologists, have typically not interpreted null results in a principled way, resulting in mistaken conclusions and choices of research direction based on non-significant findings. A non-significant result does not distinguish no evidence for an effect from evidence for no effect, radically different states of affairs. The distinction falls out naturally from a Bayesian analysis, in a consistent way that cannot be accomplished with orthodox statistics, even when statistical power is taken into account. I will show how simple free online software for calculating Bayes Factors can be used to determine what a null result is actually telling us. The new tools I introduce in this talk, and now gradually appearing in the literature, should enable publishing null results on an equal footing with significant results. I hope to make people aware of a genuine practical hole in current practice in any domain of psychology and offer a genuine practical solution. The talk will be useful to anyone who uses inferential statistics. No statistical background is assumed other than knowledge of how to do a t-test.
For more information about Professor Zoltan Dienes please see his staff profile page.
This event is being hosted by Emmanuel Pothos.
This seminar is part of the Department of Psychology's External Speaker Seminar Series 2012-13.
The seminars are aimed at Psychology staff and students but are open to all.
All seminars take place in Room D427, unless stated otherwise.
If you have any queries relating to this event, please contact Corinna Haenshel or Emmanuel Pothos.
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When and where
1.00pm - 2.00pmWednesday 20th February 2013