Interpret Cohen's g

Usage

interpret_cohens_g(g, rules = "cohen1988", ...)

Arguments

g: Value or vector of effect size values.
rules: Can be "cohen1988" (default) or a custom set of rules().
...: Not directly used.

Note

"Since g is so transparently clear a unit, it is expected that workers in any given substantive area of the behavioral sciences will very frequently be able to set relevant [effect size] values without the proposed conventions, or set up conventions of their own which are suited to their area of inquiry." - Cohen, 1988, page 147.

Rules

Rules apply to equally to positive and negative g (i.e., they are given as absolute values).

Cohen (1988) ("cohen1988"; default)
- d < 0.05 - Very small
- 0.05 <= d < 0.15 - Small
- 0.15 <= d < 0.25 - Medium
- d >= 0.25 - Large

References

Cohen, J. (1988). Statistical power analysis for the behavioral sciences (2nd Ed.). New York: Routledge.

Examples

interpret_cohens_g(.02)
#> [1] "very small"
#> (Rules: cohen1988)
#> 
interpret_cohens_g(c(.3, .15))
#> [1] "large"  "medium"
#> (Rules: cohen1988)
#>