Combating the scientific decline effect with confidence (intervals)
| Autor: | David M. Groppe |
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| Rok vydání: | 2016 |
| Předmět: |
Variables
Endocrine and Autonomic Systems Cognitive Neuroscience General Neuroscience Scientific practice media_common.quotation_subject 05 social sciences Experimental and Cognitive Psychology Replicate 050105 experimental psychology Confidence interval Statistical power 03 medical and health sciences 0302 clinical medicine Neuropsychology and Physiological Psychology Developmental Neuroscience Neurology Frequentist inference Statistics 0501 psychology and cognitive sciences Psychology 030217 neurology & neurosurgery Biological Psychiatry Decline effect media_common |
| Zdroj: | Psychophysiology. 54:139-145 |
| ISSN: | 0048-5772 |
| Popis: | A symptom of the need for greater reproducibility in scientific practice is the decline effect-the fact that the size of many experimental effects decline with subsequent study or fail to replicate entirely. A simple way to combat this problem is for scientists to more routinely use confidence intervals (CIs) in their work. CIs provide frequentist bounds on the true size of an effect and can reveal when a statistically significant effect is possibly too small to be reliable or when a large effect might have been missed due to insufficient statistical power. CIs are often lacking in psychophysiological reports, likely due to the large number of dependent variables, which complicates deriving and visualizing CIs. In this article, I explain the value of CIs and show how to compute them for analyses involving multiple variables in various ways that adjust the intervals for the greater uncertainty induced by multiple statistical comparisons. The methods are illustrated using a basic visual oddball ERP dataset and freely available MATLAB software. |
| Databáze: | OpenAIRE |
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