Function for computing mean responses across CSs
combine_cs(cs1, cs2, data, na.rm = FALSE)A tibble with the initial data frame (given by the data argument)
together with an additional column with the means for the columns defined
in the cs1 and cs2 arguments.
The column name(s) of the conditioned responses for the first conditioned stimulus
The column name(s) of the conditioned responses for the second conditioned stimulus
A data frame containing all the relevant columns for the analyses
Whether NAs should be removed, default to FALSE