“…In recent years, a large number of studies have appeared in the literature that have used growth curve modeling to assess treatment outcome (e.g., Bornas, Gelabert, Llabrés, Balle, & Tortella‐Feliu, ; Elliott & Berry, ; Elliott, Berry, & Grant, ; Elliott, Brossard, Berry, & Fine, ; Johnson et al, ; Leibert, Smith, & Agaskar, ; Lutz et al, ; McClendon et al, ). For example, in Johnson et al's () aforementioned RCT of a treatment for PTSD symptoms among women in a battered women's shelter, the researchers assessed outcome variables at baseline and then again 1 week, 3 months, and 6 months after leaving the shelter.…”