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28. Reproducibility Researchers looked at studies that were reported in newspapers with the goal of determining whether initial studies had results that could be reproduced. Reproducibility of results means that subsequent analysis confirms the conclusion

28. Reproducibility Researchers looked at studies that were reported in newspapers with the goal of determining whether initial studies had results that could be reproduced. Reproducibility of results means that subsequent analysis confirms the conclusion

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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us. What does this suggest? Source: Pegna, Alan J. et al., "Discriminating Emotional Faces without Primary Visual Cortices Involves the Right Amygdala." Nature Neuroscience, 8(1), 2005. 28. Reproducibility Researchers looked at studies that were reported in newspapers with the goal of determining whether initial studies had results that could be reproduced. Reproducibility of results means that subsequent analysis confirms the conclusion of the original study. Primary studies are studies where the researchers come up with a research objective, clearly state the goals of the study and population, describe the research method, test the research hypotheses, and draw conclusions. (a) Among the 156 primary studies reported by newspapers, 76 had results that were validated by subsequent analysis. Does this suggest less than a majority of initial studies reported by newspapers have their results validated by subsequent analysis? (b) In the article, a null effect is defined as any study where the evidence is not in favor of the research (alternative) hypothesis. Put another way, a null effect means the null hypothesis of "no effect" or "no difference" is not rejected. Among 1475 studies reported in newspapers, 75 reported a null effect. Estimate with 95% confidence the proportion of studies in which there is a null effect (such as a particular behavior does not result in a higher risk of disease). (c) What does the result in part (b) suggest about the likelihood of a research study being published with a null effect? Include a discussion of the incentive to have studies that are in favor of the research (alternative) hypothesis. of rd NW 29. Small-Sample Hypothesis Test Professors Honey Kirk and Diane Lerma of Palo Alto College developed a "learning community curriculum that blended the developmental
Transcribed Image Text:us. What does this suggest? Source: Pegna, Alan J. et al., "Discriminating Emotional Faces without Primary Visual Cortices Involves the Right Amygdala." Nature Neuroscience, 8(1), 2005. 28. Reproducibility Researchers looked at studies that were reported in newspapers with the goal of determining whether initial studies had results that could be reproduced. Reproducibility of results means that subsequent analysis confirms the conclusion of the original study. Primary studies are studies where the researchers come up with a research objective, clearly state the goals of the study and population, describe the research method, test the research hypotheses, and draw conclusions. (a) Among the 156 primary studies reported by newspapers, 76 had results that were validated by subsequent analysis. Does this suggest less than a majority of initial studies reported by newspapers have their results validated by subsequent analysis? (b) In the article, a null effect is defined as any study where the evidence is not in favor of the research (alternative) hypothesis. Put another way, a null effect means the null hypothesis of "no effect" or "no difference" is not rejected. Among 1475 studies reported in newspapers, 75 reported a null effect. Estimate with 95% confidence the proportion of studies in which there is a null effect (such as a particular behavior does not result in a higher risk of disease). (c) What does the result in part (b) suggest about the likelihood of a research study being published with a null effect? Include a discussion of the incentive to have studies that are in favor of the research (alternative) hypothesis. of rd NW 29. Small-Sample Hypothesis Test Professors Honey Kirk and Diane Lerma of Palo Alto College developed a "learning community curriculum that blended the developmental
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