getResponse is a helper function for extracting scale-wise response from a PROsetta_data object.
getResponse(d, scale_id = "all", person_id = FALSE)a PROsetta_data object.
scale IDs to extract response. If all, use all scale IDs. (default = all)
if TRUE, also return person IDs. (default = FALSE)
getResponse returns a data.frame containing scale-wise response.