dySEM: Dyadic Structural Equation Modeling

#' Ratings of relational satisfaction and commitment from 282 (M)ixed-sex couples
#'
#'A data set containing 5 ratings of satisfaction and 5 ratings of commitment for each
#'member of a mixed-sex romantic dyad. Measured using the Investment Model Scale subscales
#'(Rusbult, Martz, & Agnew, 1998). Data are from Sakaluk, Fisher, and Kilshaw's (2021) study
#'of dyadic invariance. Variable names have been re-coded to follow a stem-item-partner ("sip")
#'order, with a delimiter ("_") between the item number and partner distinguishing character.
#'
#' @docType data
#'
#' @usage data(commitmentM)
#'
#' @format A data frame with 282 rows and 20 variables:
#' \describe{
#'  \item{sat.g1_f}{Satisfaction item 1 for female partner}
#'  \item{sat.g2_f}{Satisfaction item 2 for female partner}
#'  \item{sat.g3_f}{Satisfaction item 3 for female partner}
#'  \item{sat.g4_f}{Satisfaction item 4 for female partner}
#'  \item{sat.g5_f}{Satisfaction item 5 for female partner}
#'  \item{com1_f}{Commitment items item 1 for female partner}
#'  \item{com2_f}{Commitment items item 2 for female partner}
#'  \item{com3_f}{Commitment items item 3 for female partner}
#'  \item{com4_f}{Commitment items item 4 for female partner}
#'  \item{com5_f}{Commitment items item 5 for female partner}
#'  \item{sat.g1_m}{Satisfaction item 1 for male partner}
#'  \item{sat.g2_m}{Satisfaction item 2 for male partner}
#'  \item{sat.g3_m}{Satisfaction item 3 for male partner}
#'  \item{sat.g4_m}{Satisfaction item 4 for male partner}
#'  \item{sat.g5_m}{Satisfaction item 5 for male partner}
#'  \item{com1_m}{Commitment items item 1 for male partner}
#'  \item{com2_m}{Commitment items item 2 for male partner}
#'  \item{com3_m}{Commitment items item 3 for male partner}
#'  \item{com4_m}{Commitment items item 4 for male partner}
#'  \item{com5_m}{Commitment items item 5 for male partner}
#' }
#'
#'@references Sakaluk, J. K., Fisher, A. N., & Kilshaw, R. E.(2021). Dyadic measurement invariance and its importance for replicability in romantic relationship research. *Personal Relationships*, *28*(1), 190-226.  .
#'
#'
"commitmentM"