To rule out threats to internal validity, proposes a control group design in which control group subjects are given an alternate treatment that they perceive as equally desirable to and that is similar in duration and procedures to the experimental treatment but that is concerned with dependent variables unrelated to the experimental treatment.…

Describes problems in implementing placebo controls in psychotherapy including the difficulty of ensuring that therapists and their patients will view both the experimental and placebo treatments as comparably credible. Considers six research issues stemming from the definitional requirement that the placebo control for the critical and specific…

An examination of the scientific basis of both control group designs and comparative designs in outcome research reveals that comparative designs generally have fewer threats to validity and provide a more efficient means of control for nonspecific treatment factors suggesting that comparative studies warrant a larger role in the study of…

Many problems confront researchers who are developing appropriate methods to determine the effects of sexual abuse. Particularly serious problems arise when the victims are children who were abused while attending a day care center. Several methods for studying child sexual abuse have been recommended. This paper discusses problems researchers…

Is it ethical to select clients at random for a beneficial social service, then deny the benefits to a control group for the sake of science? Participation of control groups in planning, implementation and evaluation of social programs may resolve ethical issues. (Author/CP)

In the No Child Left Behind Act and the What Works Clearinghouse, the federal government has attempted to establish guidelines for the type of education research that U.S. schools should consider in selecting instructional programs and resources. The government's clear preference for the medical model--a powerful research design in such fields as…

This paper identifies methodological and practical problems in studies of child maltreatment, including developing classification schemes for multiple forms of maltreatment; distinguishing between chronic maltreatment and isolated incidents; choosing criteria for selecting comparison groups; determining whether comparison groups have experienced…

There has been an increasing emphasis in educational policies, practices and professional development on the capacity of educational leadership to exert a causal impact on student cognitive and non-cognitive outcomes. If the strict criteria of counterfactual causality are adhered to no causal inference could be made about the effects of…

Describes the increasing concern regarding ethical matters in psychotherapy research. Whereas institutional review procedures are required to protect human subjects, there has been inaction regarding ethics for other issues: psychotherapeutic treatment, particularly the use of no-treatment control groups and the termination of patients at the end…

This article examines the status of behavioral research on genetic mental retardation syndromes and finds that the field continues to struggle with three methodological issues: (1) how to think about control or contrast groups, (2) the interplay of behavioral phenotypes with development and other within-group variations, and (3) the efficacy of…

This commentary finds that the study reported in EC 605 442, which indicated long-term gains for children with autism who experienced intensive behavioral intervention as preschoolers, is reliable, correct, and important. The commentary supports the use of quasi-random assignment to experimental or control group when truly random assignment is not…

This commentary argues that the study reported in EC 605 442, which indicated long-term gains for children with autism who experienced intensive behavioral intervention as preschoolers, needs to be replicated to be convincing, especially given the problem of nonrandom assignment of experimental and control groups. (JDD)

A solution to the problem of specification error due to excluded variables in statistical models of treatment effects in nonrandomized (nonequivalent) control group designs is presented. It involves longitudinal observation with at least two pretests. A maximum likelihood estimation program such as LISREL may provide reasonable estimates of…

Presents a prototypical case illustrating what positivist research means and argues that even critics of positivist research are logically committed to propositions that can be tested only through positivist research paradigms. The relationship between the nature of a community's research enterprise and its educational provisions must be causal.…

This commentary on EC 605 442, which indicated long-term gains for children with autism who experienced intensive behavioral intervention as preschoolers, questions the magnitude of the student changes and their significance, because of concerns about the representativeness and comparability of the sample group and the failure to measure skills…