The name of this package grew out of our research on temporal interpersonal
emotion systems (TIES), hence 'rties'. It provides tools for using a set of models to
investigate temporal processes in bivariate (e.g., dyadic) systems. The general approach
is to model, one dyad at a time, the dynamics of a variable that is assessed repeatedly
from both partners, extract the parameter estimates for each dyad, and then use those
parameter estimates as input to a latent profile analysis to extract groups of dyads with
qualitatively distinct dynamics. Finally, the profile memberships can be used to either
predict, or be predicted by, another variable of interest. Currently, 2 models are supported:
1) inertia-coordination, and 2) a coupled-oscillator. Extended documentation is provided
in vignettes. Theoretical background can be found in Butler (2011)