I am trying to calculate cohen's D effect sizes from group M and SD's using the package effsize
I have a variety of outcome variables and am trying to compare the group means for each outcome between groups (DT/TD) for each level of trial difficulty (simple and complex).
Could anyone please suggest where this may be going wrong or an alternative way to calculate it?
DT.outcome.summary.es <- DT.outcome.summary %>%
t.test(DT, TD, alternative = "two.sided",
paired = TRUE, var.equal = TRUE) %>%
cohen.d(DTorTD == c("DT", "TD"))