Effect size of interaction effect

[Choukri]

Hi everyone,

Researchers have reported that " Cohen (1988) indicated that the effect size of the interaction effects can be determined such that 0.02, 0.15, and 0.35 represent small, medium, and large effects, respectively."

I downloaded and read Cohen's (1988) chapter, but I have not found where Cohen (1988) reported that f2 values of 0.02, 0.15, and 0.35 are described as small, medium and large, respectively.


Could anyone help me to know where Cohen (1988) used this expretion?!


I will be grateful if you could help me


Greetings

[Hengkov]

Hi,

Cohen (1998) is a book, not a book chapter. On the book, there are a lot of effect size were discussed, you can see more detail there.

Best,