An investigation of the Iowa tests of basic skills for sex bias: A developmental look

Results of the Vocabulary, Reading Comprehension, and Mathematics Concepts subtests for third-, sixth-, and eighth-grade students who took Form 5 of the Iowa Tests of Basic Skills in the 1976 school year were analyzed for sex bias. Statistical significance was found for each subtest for all of the grade levels. Follow-up analyses considered skill classification, sex-stereotypicalness, and item location of the items contributing to the statistical significance. No trends for these factors were found within each grade level for the four subtests considered. For all subtests, fewer items are identified at the third-grade level than for sixth or eighth grade, and these items, in general, favored boys. For the older students, when items are found to function differently for boys and girls, nearly half favor each sex. On the whole, little evidence for sex bias was found for the four subtests and three grade levels examined.     

Reading disability and chromosome 6p21.3: evaluation of MOG as a candidate gene

Linkage analysis has localized a gene influencing specific reading disability (dyslexia) to 6p21.3. The myelin oligodendrocyte glycoprotein (MOG) gene, which maps to this region, was selected as a candidate. Myelin oligodendrocyte glycoprotein is a membrane protein, a member of the immunoglobin superfamily, that is found on the outermost lamellae of mature myelin. Although the exact function of this protein is unknown, its presence in the central nervous system and the hypothesized relationship between dyslexia and temporal processing rate as well as a suggested relationship with intelligence made this gene a candidate for dyslexia. Analysis of the coding exons and adjacent splice sites in a subset of 22 children with dyslexia from 10 sibships found a missense mutation in exon 4 in 2 of the sibships. This change from the published sequence also occurred in 86 of 96 random controls, making it considerably less frequent in this small sample of individuals with dyslexia. Subsequent typing of this single nucleotide polymorphism (SNP) in 74 nuclear families in which at least one child had reading disability showed no significant difference in frequency from the controls, however. Sib-pair linkage analysis with these families did not show significant linkage with the SNP nor with a separate polymorphic dinucleotide repeat marker in the MOG gene (MOG31/32), but association analysis identified two alleles of MOG31/32 that were associated with reading disability phenotypes with a low level of significance. Thus, although alleles in the MOG gene may be in linkage disequilibrium with a locus that contributes to reading disability, it is unlikely that the MOG gene itself is involved.     

The Influence of Class-Size Variations on Cognitive and Affective Learning of College Freshmen

The influence of class-size variations on cognitive and affective learning was measured by use of a 15-concept semantic differential scale and a teacher-made test. A Non-equivalent Control Group design was employed with two groups of college freshmen (N = 320). After attending a weekly lecture, 160 Ss were divided into eight permanent discussion sections (twenty Ss each) for two weekly meetings. Small-group discussions emphasized critical examination of feelings and their impact on evaluation of personal, social, and professional problems. The remaining 160 Ss (serving as a control) were divided into three conventional classes (fifty-five Ss each) for similar purposes. No significant differences were revealed from an ANOCOVA (analysis of covariance) analysis. Within the limits of this study, it appeared that large-group lectures combined with small-group discussions, were as effective as conventional classes of fifty to sixty Ss.     

RELATIONSHIP OF PSYCHOLOGICAL THEORY TO INSTRUCTIONAL PRACTICES 1

In this paper, factors affecting achievement in the University of Cambridge GCE A‐level geography examination, for a sample of 470 students, are analysed in terms of 17 variables grouped into the four factors of family background, cognitive ability, study orientation and school influence. Path analysis established a composite factor of study orientation to have the major causal association with achievement; this effect was direct, and there were no significant indirect effects from the family background or cognitive factors. Family background was generally not found to be associated with achievement, but an important association between ‘disembedding’ spatial ability and practical geography was suggested. A teacher's profile and amount of fieldwork undertaken were also found to correlate significantly with achievement. The main association with attainment was, however, achievement at O‐level, both in terms of O‐level achievement generally and in geography specifically. Five predictor variables were presented which accounted for a greater percentage of variation than has previously been explained. The consequences of the research for teachers and students are briefly addressed in a number of concluding remarks.     

Ice hockey shoulder pad design and the effect on head response during shoulder-to-head impacts

Ice hockey body checks involving direct shoulder-to-head contact frequently result in head injury. In the current study, we examined the effect of shoulder pad style on the likelihood of head injury from a shoulder-to-head check. Shoulder-to-head body checks were simulated by swinging a modified Hybrid-III anthropomorphic test device (ATD) with and without shoulder pads into a stationary Hybrid-III ATD at 21 km/h. Tests were conducted with three different styles of shoulder pads (traditional, integrated and tethered) and without shoulder pads for the purpose of control. Head response kinematics for the stationary ATD were measured. Compared to the case of no shoulder pads, the three different pad styles significantly (p < 0.05) reduced peak resultant linear head accelerations of the stationary ATD by 35–56%. The integrated shoulder pads reduced linear head accelerations by an additional 18–21% beyond the other two styles of shoulder pads. The data presented here suggest that shoulder pads can be designed to help protect the head of the struck player in a shoulder-to-head check.     

Teachers' Instructional Use of Summative Student Assessment Data

This study examines the extent to which classroom teachers self-report using summative assessment data in formative ways to shape instruction. A Web-based survey was administered to elementary, middle, and high school teachers in a large, suburban school district in central Virginia. Teachers reported administering a variety of summative assessments with varying frequency, and analyzing data at the aggregate level, most often using central tendency statistics. Useful methods for disaggregating data by content standards or student subgroups were not as frequently reported. Regardless of the methods of data analysis, a majority of teachers reported using assessment results to evaluate their instructional practice and make adjustments to support student learning. The results suggest, however, that teachers engaged in a cursory analysis of student performance fairly regularly but conduct more in-depth analyses less often. The study raises questions about how teachers can effectively use summative data for instructional purposes.     

Examining IEPs of English Learners with Learning Disabilities for Cultural and Linguistic Responsiveness

Effective education of English learners (ELs) with learning disabilities requires special educators to deliver culturally/linguistically responsive instruction within the context of special services, embracing the interaction between exceptionality and diversity. A critical concept is the notion that cultural and linguistic features are mandated by law to remain integral to teaching and learning once ELs are appropriately placed for special services. We examined a sampling of IEPs for ELs receiving special education for learning disabilities for cultural/linguistic responsive features to inform instruction. We found from our pilot study that the IEPs contain little to no reference to ELs' diverse linguistic and cultural qualities to (1) meet legislative mandates, and (2) guide delivery of appropriate special education. Practitioner implications for developing culturally and linguistically responsive IEPs are provided to support educators who teach ELs with learning disabilities.