Several recent studies are identified that used expert ratings of the job performance of certified professionals as a validation criterion. These studies showed a strong relationship between expert ratings and certification, but were susceptible to alternative interpretations due to design constraints. Inclusion of control constructs is presented…

Outlines some nonrandomized constructed comparison strategies that can be used to evaluate interventions for children and illustrates their use for outcome variables that would be expected to change over age if no treatment were given. The proposed strategy consists of determining an expected age function for the dependent variable using pretest…

Describes a method that uses program participants' compliance with program instructions as a means of classifying participants and in that way obtains a randomized control group for a subset of participants. Illustrates two variations of the method through a large smoking-intervention project. (SLD)

This article presents the results of a study that assessed the effect of privatized management on social service availability, utilization, and resident satisfaction in public housing communities. The respondents were heads of household who lived in public housing "projects" in Miami, Florida -- more than 90 percent of whom were African…

Objective: To evaluate the relative efficacy of (1) individual cognitive-behavioral family-based therapy (CBFT); (2) group CBFT; and (3) a waitlist control group in the treatment of childhood obsessive-compulsive disorder (OCD). Method: This study, conducted at a university clinic in Brisbane, Australia, involved 77 children and adolescents with…

Criterion and construct validation analyses support the use of both retrospective questions in lieu of a pretest and a methodological innovation to compensate for the absence of a control group in a program evaluation that calls for an unavailable experimental design. The findings obtained with this method present evidence that study abroad…

Impaired speech prosody has been identified as a critical feature of suspected childhood apraxia of speech (sCAS). Lexical stress productions of children with sCAS have been characterized as 'excessive/equal/misplaced'. This investigation examines two potential explanations of this particular deficit, articulatory difficulty and impaired intrinsic…

In the present study, college student-athletes were either placed in seminars that were intended to motivate them to succeed on and off the field (i.e., in their chosen sport) or placed in a control group (i.e., a group that did not experience these motivational seminars). Consequently, they were surveyed in order to determine if the…

Experiments offer more reliable evidence on causation than observational studies, which is not to gainsay the contribution to knowledge from observation. Experiments should be analyzed as experiments, not as observational studies. A simple comparison of rates might be just the right tool, with little value added by "sophisticated" models. This…

We report five cases with caudate infarction due to Heubner's recurring artery occlusion, in which we conducted detailed memory examinations in terms of explicit memory and implicit memory. We performed the auditory verbal learning test as explicit memory tasks, and motor and cognitive procedural memory tasks, developed by Komori, as implicit…

Data from an ongoing longitudinal study examined resilience (competent performance under adverse conditions) in a community sample of children of alcoholics (COAs n=216) and matched controls (n=201). The study examined the prevalence of competence and whether the relation of competence to internalizing and positive affect differed for COAs and…

Previous research has shown that students construct equations for word problems in which many of the terms have no referents. Experiment 1 attempted to eliminate some of these errors by providing instruction on canceling units. The failure of this method was attributed to the cognitive overload (Sweller, 2003) imposed by adding units to the…

The aim of the present study is to evaluate the effect of MultiFunk, a computer program designed to assist reading, on the reading and spelling proficiency of struggling readers. Fifty-two below-average readers and spellers, in grades 5, 6 and 7, were randomly assigned as experimental and control groups (N = 26 + 26). In addition, 114 classmates,…

The purpose of study was to investigate the impact of pre-surgical Infant Orthopaedics (IO) on consonant production at 18 months of age in children with Unilateral Cleft Lip and Palate (UCLP) and to compare the consonant production to that of age-matched children without clefts. The first ten children in a consecutive series of 20 with UCLP…

This study investigated which plants and animals Swiss children found most attractive and evaluated the effect of an educational programme on children's preferences for species. More than 4000 pupils (8-16 years old) from 248 classes participated in the study. Possible effects of the programme were studied with the help of questionnaires using a…