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Drummond, Gordon B.; Vowler, Sarah L. – Advances in Physiology Education, 2012
Most biological scientists conduct experiments to look for effects, and test the results statistically. One of the commonly used test is Student's t test. However, this test concentrates on a very limited question. The authors assume that there is no effect in the experiment, and then estimate the possibility that they could have obtained these…
Descriptors: Statistical Significance, Scientists, Tests, Biology
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Jang, Yoonhee; Mickes, Laura; Wixted, John T. – Journal of Experimental Psychology: Learning, Memory, and Cognition, 2012
The slope of the z-transformed receiver-operating characteristic (zROC) in recognition memory experiments is usually less than 1, which has long been interpreted to mean that the variance of the target distribution is greater than the variance of the lure distribution. The greater variance of the target distribution could arise because the…
Descriptors: Research Design, Prediction, Recognition (Psychology), Memory
Viadero, Debra – Education Week, 2007
Coshocton district in Ohio takes part in an unusual experiment that pays students who pass or scores high in the state exams. Pupils here in grades 3 through 6 earn $15 for every "proficient" score and $20 for "accelerated" or "advanced" scores. With annual tests given in five subjects, students can earn up to $100 if…
Descriptors: Experiments, Federal Legislation, Rewards, Motivation