According to peter

b. wood, coercive mobility (incarceration and prisoner reentry) is concentrated in neighborhoods and is an important source of residential mobility that leads to social disorganization and crime.

Atherapist at a free university clinic treats elementary school children with behavior problems who are referred by a social service agency. she is also a doctoral candidate who proposes using data she has and will collect about the children for a case-based research project. describe the type of parental permission which is required in this case?