#' @references
#'
#' **Assessment Design:**
#'
#' - Raskin, R., & Terry, H. (1988). A principal-components analysis of the
#' narcissistic personality inventory and further evidence of its construct
#' validity. *Journal of Personality and Social Psychology*, *54*(5), 890.
#' \doi{10.1037/0022-3514.54.5.890}
#'
#' **Data originated from:**
#'
#' - OpenPsychometrics. 2013. *Narcissistic Personality Inventory*.
#' <https://openpsychometrics.org/_rawdata/NPI.zip>.
#'
#' **Data used in:**
#'
#' - TBA
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