“…This is in part because the types of activities in which parents can become involved range from passive receipt of information to direct involvement in the educational and therapeutic components of a program or to active participation in decision making about a program, such as membership on a parent policy council (Turnbull & Turnbull, 1990). Participation can include formal, informal, routine, or enhanced activities or a combination of these activities (Ellis & Turnbull, 1995;Lindle, 1989;McCarney, 1986;Stephenson, 1992;Winton & Turnbull, 1981). Frequency of participation is also likely to vary among caregivers, occurring on an ongoing basis (e.g., volunteering in a classroom) or intermittently, based upon presenting child and family concerns.…”