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Joseph Simmons

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description Joseph Simmons Overview

Joseph P. Simmons is an American behavioral scientist whose research includes judgment, decision-making, and the methods used to produce and evaluate experimental evidence. With Leif Nelson and Uri Simonsohn, he demonstrated how undisclosed flexibility in data collection and analysis can sharply increase false-positive findings. Their work helped popularize safeguards such as disclosure of analytical choices, preregistration, and adequately powered studies.

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What is Joseph Simmons's 'False-Positive Psychology' paper?

In 2011, Joseph Simmons, Leif Nelson, and Uri Simonsohn published 'False-Positive Psychology' in Psychological Science, demonstrating how flexibility in data analysis can dramatically inflate the rate of false-positive findings. The paper showed that common research practices could produce statistically significant results from essentially random data.

What is the Data Colada blog?

Data Colada is a research methods blog co-authored by Joseph Simmons, Leif Nelson, and Uri Simonsohn that discusses issues of reproducibility, research integrity, and statistical methodology in psychology and related fields. It has become a prominent forum for discussions about questionable research practices and fraud detection.

What did Simmons and colleagues propose to fix psychology experiments?

Simmons and colleagues proposed that researchers disclose key methodological details, specifically how they determined sample size, all data exclusions, all manipulations, and all measures. They also advocated for pre-registration of studies and larger sample sizes to reduce the rate of false positives.

Where does Joseph Simmons work?

Joseph Simmons is a professor at the Wharton School of the University of Pennsylvania, where he conducts research on judgment, decision-making, and experimental methodology. His work has been highly influential in the reform movement within experimental psychology.

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