Change Trajectories Classes in Couple Therapy: How Much Does Relationship Satisfaction Change?

This study combined two samples of couples seeking services at an on-campus training clinic (n = 317 couples). The purpose of the study was to assess trajectories of change in relationship satisfaction across the first six sessions of treatment using latent basis growth mixture models (LBGMM) to determine whether there were distinct trajectory classes, and whether those classes were associated with alliance, and termination status. The results of the LBGMM showed two trajectory classes, one in which relationship satisfaction was initially higher and remained relatively flat, and one in which relationship satisfaction was initially lower and showed increases and decreases. These classes were associated with male partner alliance and termination status, with those in the first class more likely to end with agreement, and those in the second class more likely to end without agreement. These results are discussed in context of literature and clinical implications.