What is cohens h?

It is not clear what is meant by "cohens h." It could potentially refer to the following:

• Cohen's h statistic: This is a standardized measure of effect size often used in meta-analysis, which is calculated as the difference between two means divided by the pooled standard deviation. It is a way of quantifying the magnitude of the difference between two groups or conditions. Note that some researchers use other symbols to represent this statistic (such as d or g).

• Cohen's d: This is another widely used measure of effect size, which is similar to Cohen's h statistic but is calculated using the standard deviation of one of the groups rather than the pooled standard deviation. It is often used in experimental psychology and education research.

• Cohen's kappa: This is a statistic used to measure inter-rater agreement or reliability, particularly in categorical data. It takes into account the possibility of agreement occurring by chance and provides a score between -1 and 1, with higher values indicating better agreement.

Without more context, it is difficult to provide more detailed information about what "cohens h" might be referring to.