NEEDS: replicability

[psyteachr]

NEEDS: replicability

[BartlettJE]

The extent to which the findings of a study can be repeated with new samples from the same population. Alternatively, a scientific claim is replicable if it is supported by new data (Errington et al., 2021).

The aim of replicating a study is test the underlying theoretical process, estimate the average effect size, and test whether you can observe the effect independent of the original researchers by recreating a study's methods as closely as possible (Brandt et al., 2014).

There is not a clear definition for a successful replication, but there are some common markers (Errington et al., 2021):

• Is the replication effect in the same direction as the original study?
• Is the replication effect and statistical significance in the same direction as the original study?
• Is the effect size from the original study in the confidence interval of the replication?
• Is the effect size from the replication study in the confidence interval of the original?
• Is the effect size from the replication smaller or equal to the effect size from the original study?