RESEARCH SECTION: Nurture groups: a large‐scale,controlled study of effects on development and academic attainment

Nurture groups have contributed to inclusive practices in primary schools in the UK for some time now and have frequently been the subject of articles in this journal. This large‐scale, controlled study of nurture groups across 32 schools in the City of Glasgow provides further evidence for their effectiveness in addressing the emotional development and behaviour problems of vulnerable children. In particular, Sue Reynolds, Principal Educational Psychologist, Maura Kearney, Senior Educational Psychologist, both working in Glasgow City Council Psychological Services, and Tommy MacKay, Professor at the University of Strathclyde and Director of Psychology Consultancy Services, suggest that is the first study to report quantitative gains in academic achievement when the progress of pupils in nurture groups is compared with that of matched children in mainstream classes. This highlights the importance of providing a nurturing context as a basis for promoting children's learning.     

Using Small-Scale Randomized Controlled Trials to Evaluate the Efficacy of New Curricular Materials

How can researchers in K–12 contexts stay true to the principles of rigorous evaluation designs within the constraints of classroom settings and limited funding? This paper explores this question by presenting a small-scale randomized controlled trial (RCT) designed to test the efficacy of curricular supplemental materials on epigenetics. The researchers asked whether the curricular materials improved students’ understanding of the content more than an alternative set of activities. The field test was conducted in a diverse public high school setting with 145 students who were randomly assigned to a treatment or comparison condition. Findings indicate that students in the treatment condition scored significantly higher on the posttest than did students in the comparison group (effect size: Cohen''s d = 0.40). The paper discusses the strengths and limitations of the RCT, the contextual factors that influenced its enactment, and recommendations for others wishing to conduct small-scale rigorous evaluations in educational settings. Our intention is for this paper to serve as a case study for university science faculty members who wish to employ scientifically rigorous evaluations in K–12 settings while limiting the scope and budget of their work.     

First names and popularity in grade school children

The relationship between first name desirability and popularity was studied using 780 boys and 768 girls from six elementary schools. Girls' popularity, as demonstrated by positive sociometric choices, was significantly related to the desirability of their first names. There is also a slight indication that boys' popularity with girls was influenced by the boys' first names. Sociometric rejections were not related to first name desirability for either boys or girls. The findings for girls remained significant when the effects of parental education and ethnicity were partialled out; the single finding for boys did not.     

A caution against the use of the Slosson Intelligence Test in the diagnosis of mental retardation

The Slosson Intelligence Test, unlike most current measures of intelligence, uses a ratio method of mental age divided by chronological age to obtain an IQ score. Due to this, standard deviations are not stable across age levels and present a problem in diagnosing mental retardation. The Slosson Test Manual provides information whereby an overall test standard deviation of approximately 25 points is obtained. This is reviewed in respect to current criteria for the classification of mental retardation. It is concluded that the Slosson is inappropriate for use in the diagnosis of mental retardation.     

Factor structure and specific variance of the WPPSI subtests at six age levels

The Wechsler Preschool and Primary Scale of Intelligence (WPPSI) was factor analyzed at each of six age levels between 4 and 6½ years through the method of principal factors. A two-factor solution, corresponding essentially to Wechsler's a priori grouping of the subtests into a Verbal and nonverbal or Performance scale, best described the 11 WPPSI subtests at each age level. Examination of the common, specific, and error variance components of the subtests across age levels indicated adequate test specificity to allow for individual interpretation of all subtests except Information and Comprehension when the null hypothesis model of ipsative interpretation of individual tests is employed.