Lee Branum-Martin

Literacy as a Unidimensional Multilevel Construct: Validation, Sources of Influence, and Implications in a Longitudinal Study in Grades 1 to 4

This study examined the extent to which literacy is a unitary construct, the differences between literacy and general language competence, and the relative roles of teachers and students in predicting literacy outcomes. Much of past research failed to make a distinction between variability in outcomes for individual students and variability for outcomes in the classrooms students share (i.e., the classroom level). Utilizing data from 1,342 students in 127 classrooms in Grades 1 to 4 in 17 high-poverty schools, confirmatory factor models were fit with single- and two-factor structures at both student and classroom levels. Results support a unitary literacy factor for reading and spelling, with the role of phonological awareness as an indicator of literacy declining across the grades. Writing was the least related to the literacy factor but the most impacted by teacher effects. Language competence was distinct at the student level but perfectly correlated with literacy at the classroom level. Implications for instruction and assessment of reading comprehension are discussed.

The Impact of an Instructional Intervention on the Science and Language Learning of Middle Grade English Language Learners

Abstract The goal of this study was to assess the effectiveness of an intervention—Quality English and Science Teaching (QuEST)—designed to develop the science knowledge and academic language of middle grades English language learners studying science in their second language and their English-proficient classmates. Ten sixth-grade science teachers in 5 middle schools in a large south Texas district participated in the study. For each teacher, 2 sections were randomly assigned to the intervention, Project QuEST, and 2 sections were randomly assigned to the district curriculum. The sample of students included English language learners, former English language learners, and fluent English-speaking students. Treatment effects were tested separately for science knowledge and vocabulary using a 3-level multilevel analysis of covariance (students nested within section, sections nested within teacher, and teacher) with the analogous pretest serving as the covariate. Analyses included fixed effects of treatment assignment and the covariate. Treatment effects were tested at the level of the section. Results indicated that posttest differences favoring the treatment group sections were statistically significant for both science knowledge and vocabulary.

Bilingual Phonological Awareness: Multilevel Construct Validation among Spanish-Speaking Kindergarteners in Transitional Bilingual Education Classrooms.

The construct validity of English and Spanish phonological awareness (PA) tasks was examined with a sample of 812 kindergarten children from 71 transitional bilingual education program classrooms located in 3 different types of geographic regions in California and Texas. Tasks of PA, including blending nonwords, segmenting words, and phoneme elision, were measured in Spanish and in English and analyzed via multilevel confirmatory factor analysis at the task level. Results showed that the PA tasks defined a unitary construct at both the student and classroom levels in each language. English and Spanish PA factors were related to each other (.93 and .83 at the student and classroom levels, respectively) as well as to word reading, both within languages (correlations estimated between .74 and .93) and across languages (correlations estimated between .47 and .79). Although the PA constructs were statistically separable in each language, the high correlation between Spanish and English PA indicates considerable overlap in these abilities.

Development of Bilingual Phonological Awareness in Spanish-Speaking English Language Learners: The Roles of Vocabulary, Letter Knowledge, and Prior Phonological Awareness

Theories concerning the development of phonological awareness place special emphasis on lexical and orthographic knowledge. Given the large degree of variability in preschool classrooms that house Spanish-speaking English language learners (ELL), this study controlled for classroom effects by removing classroom means and covariances based on 158 children from 40 classrooms. Path analyses of the child-level covariance matrices tested the extent to which vocabulary and letter knowledge in each language predicted growth in English and Spanish phonological awareness of 130 preschool-age, Spanish-speaking ELLs. Results supported cross-linguistic effects of prior phonological awareness and Spanish vocabulary in the development of bilingual phonological awareness. Implications for theory, instruction, and research methods are discussed.

Classification and Identification of Reading and Math Disabilities: The Special Case of Comorbidity

Much of learning disabilities research relies on categorical classification frameworks that use psychometric tests and cut points to identify children with reading or math difficulties. However, there is increasing evidence that the attributes of reading and math learning disabilities are dimensional, representing correlated continua of severity. We discuss issues related to categorical and dimensional approaches to reading and math disabilities, and their comorbid associations, highlighting problems with the use of cut points and correlated assessments. Two simulations are provided in which the correlational structure of a set of cognitive and achievement data are simulated from a single population with no categorical structures. The simulations produce profiles remarkably similar to reported profile differences, suggesting that the patterns are a product of the cut point and the correlational structure of the data. If dimensional approaches better fit the attributes of learning disability, new conceptualizations and better methods to identification and intervention may emerge, especially for comorbid associations of reading and math difficulties.

Language proficiency, home-language status, and English vocabulary development: A longitudinal follow-up of the Word Generation program

This longitudinal quasi-experimental study examines the effects of Word Generation, a middle-school vocabulary intervention, on the learning, maintenance, and consolidation of academic vocabulary for students from English-speaking homes, proficient English speakers from language-minority homes, and limited English-proficiency students. Using individual growth modeling, we found that students receiving Word Generation improved more on target word knowledge during the instructional period than students in comparison schools did, on average. We found an interaction between instruction and home-language status such that English-proficient students from language-minority homes improved more than English-proficient students from English-speaking homes. Limited English-proficiency students, however, did not realize gains equivalent to those of more proficient students from language-minority homes during the instructional period. We administered follow-up assessments in the fall after the instructional period ended and in the spring of the following year to determine how well students maintained and consolidated target academic words. Students in the intervention group maintained their relative improvements at both follow-up assessments.

Helping ELLs Meet the Common Core State Standards for Literacy in Science: The Impact of an Instructional Intervention Focused on Academic Language.

Abstract The goal of this study was to assess the effectiveness of an intervention—Quality English and Science Teaching 2—designed to help English language learners (ELLs) and their English proficient classmates develop academic language in science, as required by the Common Core State Standards. The intervention consisted of supplementary instructional materials and professional development. Participants included 1,309 students, of whom 353 were ELLs. Sixty sections taught by 15 teachers in seven middle schools were randomized within teacher to the intervention or the control condition. Treatment effects were tested separately for academic language and science knowledge. For the whole group, results indicated posttest differences favoring the treatment group sections were statistically significant for academic language and science. For ELLs however, posttest differences favored the treatment group for academic language only. Follow-up analyses investigating implementation found that treatment fidelity was related to gains in both academic language and science knowledge for the group as a whole and for ELLs. Effect sizes suggest the intervention was promising in promoting the academic language in science of both ELLs and their English proficient classmates.

Assessing the Reliability of Curriculum-Based Measurement: An Application of Latent Growth Modeling.

The purpose of this study was to demonstrate the use of Latent Growth Modeling (LGM) as a method for estimating reliability of Curriculum-Based Measurement (CBM) progress-monitoring data. The LGM approach permits the error associated with each measure to differ at each time point, thus providing an alternative method for examining of the reliability of CBM reading aloud data over repeated measurements. The analysis revealed that the reliability of CBM data was not a fixed property of the measure, but it changed with time. The study demonstrates the need to consider reliability in new ways with respect to the use of CBM data as repeated measures.

Evaluating the Structure of Early English Literacy Skills in Deaf and Hard-of-Hearing Children

Better understanding the mechanisms underlying developing literacy has promoted the development of more effective reading interventions for typically developing children. Such knowledge may facilitate effective instruction of deaf and hard-of-hearing (DHH) children. Hence, the current study examined the multivariate associations among phonological awareness, alphabetic knowledge, word reading, and vocabulary skills in DHH children who have auditory access to speech. One hundred and sixty-seven DHH children (M age = 60.43 months) were assessed with a battery of early literacy measures. Forty-six percent used at least 1 cochlear implant; 54% were fitted with hearing aids. About a fourth of the sample was acquiring both spoken English and sign. Scores on standardized tests of phonological awareness and vocabulary averaged at least 1 standard deviation (SD) below the mean of the hearing norming sample. Confirmatory factor analyses showed that DHH childrens early literacy skills were best characterized by a complex 3-factor model in which phonological awareness, alphabetic knowledge, and vocabulary formed 3 separate, but highly correlated constructs, with letter-sound knowledge and word reading skills relating to both phonological awareness and alphabetic knowledge. This supports the hypothesis that early reading of DHH children with functional hearing is qualitatively similar to that of hearing children.

Reading Among Diverse DHH Learners: What, How, and for Whom?

Students who are deaf and hard of hearing (DHH) face challenges in learning to read. Much has been written about the relative importance of the different factors associated with success in reading, but these factors are disputed within the literature on DHH readers. The Center on Literacy and Deafness, funded by the Institute of Education Sciences, is engaged in a nationwide project to identify child-by-instruction interactions related to instructional factors that are malleable within the classroom context. In the present article, the authors describe the project, present the conceptual model on which it is based, explain the processes and procedures used to choose assessment tools, and discuss their theoretical view of how reading and instruction might differ based on an individual student’s language and level of functional hearing.