Halpern Robert
High/Scope Educational Research Foundation.
Am J Orthopsychiatry. 1984 Jan;54(1):33-42. doi: 10.1111/j.1939-0025.1984.tb01474.x.
A review of research on home-based early intervention programs suggests that statistical evidence in support of program effects is lacking. Methodological problems, inadequacies in causal modeling, and limitations inherent in the intervention approach are examined.