The purpose of this study is to identify factors in the home literacy environment using the Stony Brook Family Reading Survey (SBFRS) in order to understand the extent to which these factors predict phonemic awareness and other basic reading skills, as assessed by selected subtests from the Woodcock-Johnson III (WJ III). The present study used archival data to examine the home literacy habits of a sample of parents and preschool children ages 3-5 years (range in months= 36-67) from a private and a public preschool with a combination of high- and low-income backgrounds and various ethnicities. Using exploratory factor analyses with 165 participants, three dimensions of family reading behavior were identified from the SBFRS including Home Reading Emphasis, Adult Responsibility, and Parental Academic Expectations. Each of the SBFRS rotated factors considered together in a stepwise multiple regression analysis contributed significantly over and above age to the prediction of phonological awareness as measured by the Phonemic Awareness 3 (PA3) Cluster from the WJ III. The best order of predictors for PA3 of the WJ III, with stepwise entry, included Factor 1: Home Reading Emphasis, Factor 3: Parental Academic Expectations, and Factor 2: Adult Responsibility. One of the SBFRS rotated factors, Factor 1: Home Reading Emphasis, considered in a stepwise multiple regression analysis using age as a covariate contributed significantly to the prediction of basic reading as measured by the Basic Reading Skills (BRS) Cluster of the WJ III [WJ III BRS=.38+.26(Factor1)]. Results demonstrate the importance of the aforementioned factors in relation to the prediction of emergent literacy. Future studies are needed to investigate parental expectations, adult responsibility for child outcomes, the impact of fathers, and the importance of dominant home language on the emergence of literacy. Revision of the SBFRS, in addition to studies that include a wider range of SES, racial/ethnic, and linguistic groups, would help to standardize the measure for future use.

This research involves an investigation of the construct validity of the Wechsler Intelligence Scale for Children-; Fourth Edition (WISC-IV) when compared to the Woodcock-Johnson III Tests of Cognitive Abilities (WJ III COG) to provide evidence for the utility of using the WISC-IV in assessing cognitive abilities according to the Cattell-Horn-Carroll (CHC) theory. The study was conducted using archival data consisting of 92 children and adolescents between the ages of 6 years and 16 years, 11 months referred for a comprehensive neuropsychological evaluation at a university-affiliated assessment center. Data for all participants were collected following administration of a battery of measures as part of a neuropsychological evaluation, with tests administered in no particular order. The mean age of children was 9.82 years (SD= 2.81) with a mean grade level of 3.95 (SD= 2.63). Ten hypotheses were investigated specifically to examine the comparability of the general intellectual functioning scores for each battery among a sample of children with neuropsychiatric disorders, as well as to examine the convergent and discriminate validity of the WISC-IV index scores. The first hypothesis utilized a paired samplest&n-test and found that the WISC-IV Full Scale IQ score was significantly below that of the WJ III COG General Intellectual Ability-Extended score. For the remaining hypotheses, Pearson product-moment correlations revealed large correlations between the WISC-IV and WJ III COG convergent constructs of general intellectual functioning, comprehension-knowledge, fluid reasoning, working memory, and processing speed. For correlations between divergent constructs, the WISC-IV Verbal Comprehension Index and the WJ III COG Visual-Spatial Thinking (Gv) factor demonstrated a large correlation. Both the WISC-IV Processing Speed Index and Working Memory Index correlated moderately with the WJ III COGGvfactor, while the WISC-IV Perceptual Reasoning Index correlated moderately with the WJ III COG Auditory Processing factor. Fisher's r to Z transformation was used to assess for significant differences between the observed correlations and stipulated values determined. Results indicated that correlations between the global IQ, fluid reasoning, and short-term memory composite scores of the two measures were significantly greater than that found for the WISC-III and WJ III COG, while the relationship between the verbal ability and processing speed composite scores were consistent with past findings. Correlations between divergent constructs revealed a reliable pattern of significantly greater relationships than was found for research concerning the WISC-III and WJ III COG. Primarily, results of this study provided evidence that the substantive changes made to the WISC-IV have improved the ability to interpret the Full Scale IQ score as a measure of general intelligence similar to that obtained by the WJ III COG. However, the global IQ scores between the two measures cannot be assumed to be equivalent among children with neuropsychiatric disorders. Results also suggested that the WISC-IV appears to provide improved measurement of the CHC broad abilities of fluid reasoning (Gf) and short-term memory (Gsm). Correlations between divergent constructs provided evidence for relationships between cognitive abilities suggested to be significantly related to academic achievement. This study concluded that research findings for the WISC-III cannot be applied conclusively to the WISC-IV and that the substantive changes made to the WISC-IV have improved the ability to interpret the battery under the CHC framework. However, findings underscore the importance of examining performance across second-order factors that may contribute to differences in general intelligence, as well as remaining aware of differences in narrow ability constructs measured, task demands, or shared variance between subtests when making interpretations of test performance.

There has been much controversy concerning the comparability of the Wechsler Intelligence Scales for Children-Revised (WISC-R) and the Woodcock-Johnson Tests of Cognitive Ability (WJTCA). Previous research has raised the issue of a mean score discrepancy between the tests when used with the learning disabled. This study analyzed and compared performances on these two tests by re-evaluated and newly referred LD students and newly referred non-LD students. In addition, subtypes of LD students were formed on the basis of achievement test scores. These students' test performances were also analyzed and compared. The results of this study were consistent with previous research. The Full Scale scores from the two tests were highly correlated in all three groups, but the WISC-R was significantly higher than the WJTCA for each group. Across the identified LD subtypes there was a significant difference between the Full Scale scores from the two tests. However, meaningful patterns of strengths and weaknesses across aspects of cognitive functioning were not uncovered. These results indicate that the WISC-R and WJTCA result in significantly different estimates of the cognitive ability of LD and referred students. This difference can be attributed to a combination of three possible explanations--the effects of the use of non-random samples, the use of different norm groups when the tests were standardized, and the tests contain different content.

The purpose of this study was to determine whether the Woodcock-Johnson-Revised Cognitive test is biased when used with a Hispanic population of school-age children. Norming data, provided by R. Woodcock, Ph.D., for grades three, five, eight, and eleven were used for the study. Three hypotheses were explored. The first hypothesis called for a comparison by gender. The second hypothesis called for a comparison of non-Hispanics and Hispanics. The third hypothesis called for comparisons between all combinations of grade levels using only the non-Hispanic subgroup. Using the results of confirmatory factor analysis from LISREL VIII (1993), the chi-square difference test, and three goodness-of-fit indexes provided evidence of similarity in factor patterns between target groups. Hypothesis 1 stated that there were no differences between male and female factor patterns. The results of the confirmatory factor analysis supported the acceptance of hypothesis 1. Hypothesis 2 stated that there were no differences between non-Hispanic and Hispanic students. The results of the confirmatory factor analysis supported a qualified acceptance of hypothesis 2. The relationships between the latent variables are significantly different. Age, therefore, may have been a confounding variable in this study. Hypothesis 3 stated that there were no differences in patterns between grades. Only one of the six grade comparisons, 3-5, found model 1 to be the preferred model. All other comparisons found model 3 to be the preferred model. The residual or error terms were variable in matrix patterns, indicating that a factor other than age may be influencing the relationships. A fourth analysis was utilized and determined model 1 to be the preferred model. The results of the analysis indicate that differential patterns of processing, rather than age, may be the variable influencing the relationship of latent variables.

Thesis (Ph. D.)--University of Missouri-Columbia, 2000. / Typescript. Vita. Includes bibliographical references (leaves [88]-91). Also available on the Internet.

The purpose of this study was to explore the construct validity of the Kaufman Assessment Battery for Children, Second Edition (KABC-II; Kaufman & Kaufman, 2004a) and the Woodcock-Johnson Tests of Cognitive Abilities, Third Edition (WJ-III COG; Woodcock, McGrew, & Mather, 2001) with a sample of 200 preschool children, ranging in age from 4 years, 0 months to 5 years, 1 1 months, and attending preschool and daycare programs in and around a Midwestern city. This study attempted to determine if the Cattell-Horn-Carroll (CHC) factor structure represented on these tests can be identified with young children. Individual confirmatory factor analyses were conducted separately with the KABC-II and WJ-III COG. Moreover, a joint confirmatory factor analysis was conducted using both the KABC-II and WJ-III COG. The results of the individual KABC-II factor analyses indicated a two-tiered Gf Gc model provided the best fit to the data, although the three-tiered CHC model also fit the data well. This suggests the underlying factor structure of the KABC-II is well represented by the CHC theory. The WJ-III COG was best represented by an alternative CHC model, in which the Gf factor and subtests had been removed, indicating not all CHC constructs represented on the WJ-III COG can be reliably identified among young children. The joint confirmatory factor analysis indicated the strongest measures of the shared CHC factors on the KABCII and WJ-III COG, which can help to guide cross-battery assessment with preschool children. Overall, the results confirmed multiple CHC abilities can be assessed with young children, implying clinicians should be using preschool tests that provide scores for several cognitive abilities. This study also revealed the constructs of the CHC theory may be represented somewhat differently on preschool tests due to developmental influences. Strong correlations were evident between unrelated tasks, primarily because the verbal and linguistic demands of many subtests caused them to load unexpectedly on the Gc factor. Suggestions for future research include conducting the same study using preschool children with suspected disabilities, as well as with older children, examining other instruments that include a Gf factor, and conducting exploratory factor analysis with subtests from the KABC-II and WJ-III COG that contain significant components of more than one ability. / Department of Educational Psychology

There is no abstract available for this dissertation. / Department of Educational Psychology

This study investigated the utility of the cognitive measures of the Dean-Woodcock Neuropsychological Assessment System (D-WNAS) in the differential diagnosis of Alzheimer dementia (AD) from depression. Past research has found an overlap of symptoms in the early stages of AD and those found in geriatric depression. In both instances, patients are likely to report memory loss, attention deficits, and mood disturbances. As a result of this similarity, differentially diagnosing one from another is a vexing problem for the clinical practitioner. Although a number of screening measures have been offered, none have proven to be clinically useful. Some have proposed this is the result of reliance upon use of single-factor measures. Indeed, many have proposed a multiple factor assessment model would be of more utility in diagnosing AD and depression. Considering the importance of an accurate diagnosis in treatment, this study utilized a multiple factor cognitive model offered by the Dean-Woodcock Neuropsychological Assessment System to differentiate AD from depression.Specifically, subtest scores of the Woodcock-Johnson III - Tests of Cognitive Ability (WJ-III; cognitive measure of the Dean-Woodcock Neuropsychological Assessment System) were compared. Participants (n = 172) fell into one of three groups (i.e. Depressed, Demented, or Normal) based on the diagnoses of a board certified neurologist and neuropsychologist. Results showed clinical groups performed more poorly than normal participants on tests of the WJ-III. In addition, AD participants differed significantly from depressed participants on the Visual Matching and Spatial Relations tests of the WJ-III. However, in all, the WJ-III demonstrated a classification hit rate of less than 70%. Although groups were found to differ in specific ways, the classification hit rate of the WJ-III suggested it could not differentially diagnose AD from depression alone. / Department of Educational Psychology

The overall purpose of this study was to investigate the nature of the relationship between a recently revised, multidimensional intelligence test (WJ III COG) and a short form of an older, well-established intelligence test (WISC-III) with intellectually gifted children. As such, this study examined the implications of using a theoretically and empirically sound choice (WJ III COG) as compared to a more practical alternative (i.e., WISC-III short form); it also explored the impact of different cut-off and eligibility criteria upon eligibility decisions. Participants were solicited from a group of 75 students who had been nominated for a gifted program at a small elementary school located on the urban fringe of a midsize city in the Midwest. Thirty-five students, ranging in age from 9 years, 2 months to 11 years, 1 month, participated in this study. The sample included 15 students who were admitted into the program and 20 students who were deemed ineligible. The WISC-III short form exhibited a positive relationship with the WJ III COG, as its FSIQ estimate correlated significantly with both the WJ III COG GIA-Std and BIA scores, accounting for approximately 33% and 35% of the variance, respectively. The eligible group performed significantly higher on the WISC-III short form than the WJ III COG, whereas the ineligible group performed consistently across all global measures of intelligence. The eligibility of 46% of the sample varied as a result of the test and restrictiveness of the cut-off criteria. More students were identified as intellectually gifted when flexible, rather than strict, cut-off criteria were used to make eligibility decisions. Moreover, the eligibility of approximately 63% of the participants varied as a result of the test and whether eligibility criteria involved general and specific intellectual abilities or solely general intellectual ability. More students were deemed eligible when general and specific intellectual abilities were considered as compared to decisions based only on general intellectual ability. / Department of Educational Psychology

Based on phenomenology, traditional methods of diagnoses of attention deficit/hyperactivity disorder-combined type (ADHD/C) and reading disorder (RD) are neither precise, nor do they provide explicit information relevant to intervention. Consequently, current researchers have called for diagnostic techniques based on etiological rather than traditional symptom-based markers. The purpose of this study was to examine whether or not WJ III cognitive profiles of individual students provided meaningful diagnostic evidence of ADHD/C and/or RD congruent with prominent theories and group scores from quantitative studies. Six holistic student cases were examined. Two were prequalified with ADHD/C, two with RD, and two with ADHD/C+RD using traditional symptom-based diagnosis. Data were drawn from archived psychoeducational evaluation case files including background information, psychosocial evaluations, and WJ III cognitive profiles. Contextual mediators such as testing room conditions, behavioral observations, and developmental histories were examined that might influence the interpretation of cognitive profiles within the school setting.Among the four students prequalified with RD, three students displayed the requisite cognitive profile of weaknesses on clusters of Phonemic Awareness-3 and/or Cognitive Fluency. A review of distinctive contexts in the fourth student's case as well as the absence of the expected RD cognitive profile supported the determination that his reading problems were secondary to ADHD/C. These findings produced theoretical as well as literal replications of the double-deficit theory of RD. Results were less clear among the four students prequalified with ADHD/C due to varying performances on tests of Broad Attention and Executive Processes--cognitive factors documented by the behavioral inhibition theory of ADHD/C. As expected, students prequalified with ADHD/C+RD displayed a wider range of deficits, presumably due to the additive effect of having two disorders. The mediating influence of idiosyncratic contexts underscored the importance of professional judgment in cognitive profile interpretation.Although it is sometimes difficult to distinguish between academic performance deficits associated with ADHD/C and skills deficits associated with RD, it was shown that cognitive profiles in concert with a comprehensive psychoeducational evaluation can, in some cases, provide etiological evidence for differential diagnosis and a guide for intervention. More practice-based research within ecologically valid environments is recommended. / Department of Educational Psychology