Ethics committees and funding agencies often receive protocols that involve either too many or too few animals to answer the specific research question being investigated. It is evident that a greater ...

Thomas D. Cook, a professor of sociology, psychology, education, and social policy at Northwestern University, criticizes education researchers’ reluctance to perform randomized experiments. He points ...

A new statistical tool can help researchers get meaningful results when a randomized experiment, considered the gold standard, is not possible. A new statistical tool can help researchers get ...

Anyone who’s read my stuff with any regularity is acutely aware of my disdain for the way many observational studies are conducted and interpreted in health and nutrition research, as well as my ...

Proceedings of the National Academy of Sciences of the United States of America, Vol. 113, No. 27 (July 5, 2016), pp. 7383-7390 (8 pages) We provide a principled way for investigators to analyze ...

Randomized experiments have long been a cornerstone of scientific research. And many tech companies run randomized tests to learn from the huge amounts of data their customers generate. In 2019, ...

Randomized controlled trials (RCTs; sometimes referred to as A/B tests) are considered the gold standard for evidence in science and medicine. If you took anything away from your Research Methods 101 ...