“…The instrument is an adaptation of McWilliam's (1993) earlier version and contains items selected based on studies of families' reactions to intervention plans (e.g., Able- Boone, Sanridall, Loughry, & Frederick, 1990;Summers et al, 1990), reflective writings about family-centered intervention plans (e.g., Bailey et al, 1986;Boone, McBride, Swann, Moore, & Drew, 1998;Johnson, McGonigel, & Kaufmann, 1989), curricula for developing family-centered intervention plans (Giangreco, Cloninger, & Iverson, 1993;McWilliam, 1992), and a review of the literature on family-centered practices in natural environments. Some of the items represent the more basic indicators of quality (selecting outcomes that match families' priorities), and others are indicative of the higher level qualities (strategies embedded in routines).…”