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Failure to Replicate the Mehta and Zhu (2009) Color Effect
Mehta and Zhu (2009) reported several studies in Science on the effects of the colors red and blue over a series of cognitive tasks. Red was hypothesized to induce a state of avoidance motivation which
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The Prevalence of Declining Effect Sizes in Educational Research
Effect sizes are the statistic generated by meta-analyses, a commonly used statistic in education research. This project uses a methodological framework similar to that of Jennions and Moller (2001) to determine whether declining effect sizes
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Understanding Replication: Confidence Intervals Much Better Than p Values
Geoff Cumming, La Trobe University, Australia, presents his research on “Understanding Replication: Confidence Intervals Much Better Than p Values,” at the 25th APS Annual Convention. Replication is at the heart of science. A current hot
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Psychology uses 'registered replication reports' to improve reliability
The Guardian: On Tuesday a group of scientists published a protocol, a set of instructions for running an experiment, which represents the culmination of a year’s discussion on the problems inherent in academic publishing. The
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APS Journal Seeks Labs to Participate in First Registered Replication Report Project
Updated June 5, 2013: Perspectives on Psychological Science has received a wonderful response to the call for proposals to participate in its first Registered Replication Report Project. The deadline for proposals to participate in the
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The Crisis in Social Psychology That Isn’t
The New Yorker: Things aren’t quite as bad as they seem, though. Although Nature’s report was headlined “Disputed results a fresh blow for social psychology,” it scarcely noted that there have been some replications of
