Misinterpreting p-values as the Probability of the Null Hypothesis

Abelson's Defense of Null Hypothesis Testing

Which of the following is considered a major criticism of null hypothesis testing?

Match each major criticism of null hypothesis testing (NHST) with the explanation of why it limits the interpretation of psychological data.

A researcher conducts a study on the effects of a new study technique and obtains a p-value of 0.055. They conclude that the technique has no effect because the result was not 'statistically significant' at the 0.05 level. This researcher's conclusion directly reflects the criticism that null hypothesis testing relies on an arbitrary significance threshold.

Arrange the following steps to logically analyze how the use of a rigid significance threshold in null hypothesis testing can lead a researcher to overlook potentially important scientific insights.

One of the major criticisms of null hypothesis testing is that rejecting the null hypothesis provides very little information about the actual relationship between variables in a population.

Limited Informativeness of Rejecting the Null Hypothesis

The 2015 Ban on p-values in Basic and Applied Social Psychology

Arbitrary Nature of the 0.05 Significance Threshold

Misinterpreting p-values as the Probability of Replication

Why is rejecting the null hypothesis in psychological research criticized for providing very little information about the actual relationship between variables?

A researcher concludes that a treatment is entirely ineffective because the results yielded a $p$-value of $0.053$. A colleague evaluating this conclusion would point out that the researcher is relying on a(n) _____ significance threshold that treats nearly identical statistical evidence as categorically different.

A researcher is applying their knowledge of null hypothesis testing (NHST) criticisms to evaluate common errors in published studies. Match each research scenario on the left to the specific criticism of NHST it best illustrates on the right.

Critics who argue that null hypothesis testing is 'not very informative' are pointing out that a statistically significant result (e.g., p < 0.05) tells a researcher only that the null hypothesis can be rejected, but does not reveal the _____ of the relationship between variables — which is essential for understanding what the finding actually means in the population.

A peer reviewer is evaluating whether a psychology paper adequately addresses the major criticisms of null hypothesis testing (NHST). Arrange the following evaluative steps in the order a thorough reviewer should perform them, from first to last.

Null hypothesis testing is widely used in psychological research but is subject to several major criticisms. Identify and state the three primary criticisms of null hypothesis testing that limit its usefulness in psychological science.

Based on the criticisms of null hypothesis testing, diagnose how Dr. Vance's conclusions show a misunderstanding of her results and explain why her reliance on rejecting the null hypothesis fails to provide key information about the variables in the population.

A developmental psychologist evaluates a new cognitive training program and finds a $p$-value of $0.053$. Because the result is above the standard cutoff, the psychologist concludes that the training program has no effect and stops the research. Apply the criticisms of null hypothesis testing to explain the flaw in the psychologist's decision-making process.