The pupose of this study was to examine the validity of the Differential Abilities Scale with a gifted sample. Subjects consisted of 111 students identified as gifted by Indiana S-4. They were in grades 1 thru 6 and ranged in age from 6-8 to 12-11 with a mean age of 9-8. There were 60 females and 51 males who participated. Approximately, 1% of the population was minority which closely resembled the school population. Data from previously administered WISC-III and WIAT (The Psychological Corporation, 1992) were available for 21 of the 111 students.The first aspect of this study was to assess the construct validity of the DAS through investigation of the internal structure. Several different models were proposed. These analyses revealed that the proposed models were not good explanations of the relationships among obtained scores because convergence could not be obtained. A respecified two factor model was obtained where loadings on a Verbal Factor were constrained as recommended by Maxwell (1977). For this sample of gifted students a two-factor model with the first factor being primarily composed of Word Definitions was found to be a tenable one for the DAS.The second aspect of this study was to examine the convergent and predictive validity of the DAS by comparing these scores with the WISC-III and WIAT scores. Verbal factors for the two intelligence tests were the most highly correlated. Although there is overlap between the two intelligence measures, each test measures something unique. While one might expect these two instruments would not correlate perfectly, this correlation is lower than predicted.The DAS cognitive portion was more highly related to the other ability measure, the WISC-III, than it was to achievement as measured by the WIAT. In addition, achievement portions of both instruments were more highly related than they were to the ability measures. / Department of Educational Psychology

The purpose of this study was to determine if distinct subgroups of high achieving children could be identified using a recently redeveloped intelligence measure—The Woodcock-Johnson Tests of Cognitive Ability, 3rd edition (WJ-III). Students were referred for further testing based on their scores on the Indiana State Test of Educational Progress (the ISTEP+). Students were included in the study if they scored at or above the 90th percentile on the ISTEP+ Cognitive Skills Index, or the reading and/or math portions. Using these criteria, 202 students were referred for further testing. These students were clustered with Ward's method of cluster analysis using their scores on the seven CHC factors of the WJ-III. Their individual scores on two other intelligence measures (the Stanford-Binet IV and the Kaufman Brief Intelligence Test), as well as other scores from the WJ-III were used to further describe the clusters that emerged. The following three subgroups were identified: (a) decidedly gifted, (b) problem solvers, and (c) slow-paced achievers. Not all subgroups obtained the gifted score ranges expected on the three measures employed. The clusters were better described as displaying a slight levels effect, in that the groups were most different from one another in terms of the overall intelligence quotient and mean CHC factor scores, with one group scoring in the superior to high average ranges, one in the high average to average ranges, and one in the average range overall. This study provided evidence for the use of intelligence measures in describing gifted individuals' specific strengths and weaknesses. It also has significant implications for the use of intelligence measures in assessing giftedness within an applied setting. This study is useful as a validation study for the three intelligence measures employed. / Department of Educational Psychology

Typescript. / Thesis (Ph. D.)--University of Hawaii at Manoa, 1990. / Includes bibliographical references (leaves 160-174) / Microfiche. / xi, 174 leaves, bound ill. 29 cm

No description available.

No description available.

M.Ed. (Psychology of Education) / Please refer to full text to view abstract

An anaerobic, cellulose decomposing bacterium was isolated in pure culture from the ingesta of a bovine rumen. The organia was a small, curved, Gram negative rod that occurred singly or in chains. The isolated bacterium was identified as a member of the genus Butyrivibrio because of its morphology and because of its production of certain volatile fatty acids in a rumen fluid-glucose medium fermentation. The characteristic fermentation waa the production of a large amount of butyric acid and some lactic acid or succinic acid, and the lack of production of propionic acid. It was found that when rumen fluid was omitted from the fermentation medium the production of butyric acid decreased markedly. The organism was found to have a relatively narrow pH tolerance for the initiation of growth, pH 6.3 to 7.2, with an optimum of pH 6.9 to 7.0. Growth stopped at about pH 6.4, and continued fermentation decreased the pH to 6.0. The organism was cultured continuously on a medium which vu chemically defined except that vitamin-free casein hydrolysate was included, when the hydrolysate was replaced by a mixture of pure L-isomers of amino acids similar in composition to the hydrolysate, good growth occurred. However, when each amino acid was supplied at a uniform weight concentration, much weaker growth was obtained. Evidence was obtained indicating that aadno acids were inhibitory, although the reason for the mild inhibition was not disclosed. The following amino acids were found to be critical nutrients, but in some cases their status, whether essential or stimulatory, was found to be dependent on the composition of the medium: - cysteine, histidine, isoleucine. methionine, lysine, tyrosine, asparagine and leucine. A medium containing only these amino acids supported only very weak growth. Aspartic acid was found to be mildly inhibitory to growth, and glutamic acid was found to reverse the inhibition. A mixture of the common purine and pyrimidine bases, and a mixture of volatile fatty acids, were each found to be inhibitory to growth. Biotin, folic acid, and pyridoxal were essential vitamins, but the other eight B-vitamins examined were found to be neither stimulatory nor essential. Carbon dioxide was found to be required in relatively high concentration in order for growth to start in a medium devoid of rumen fluid. Purines, pyrimidines, cobalamine, and Tween-80 in a mixture were found not to replace the carbon dioxide. Rumen fluid was found to contain material very stimulatory for growth of the Butyrivibrio. The stimulatory material was found to be possibly two compounds or types of compounds, one a peptide or peptide like substance, and the other an anionic substance which probably was polynucleotide-like. / Ed. D.

This qualitative investigation into differences between intellectually gifted sixth grade students and sixth grade students in regular education programs was conducted with two questions as the focus: 1. Are there differences other than IQ between these two groups of students on a selection of school-related variables? 2. Are there sixth grade students in the regular education program who exhibit the same profile on the selected variables as do the intellectually gifted sixth grade students? An analysis of forty variables held by each of the 129 students in three Gifted Center Classes and two regular education classes indicated differences exist between the two groups in some areas other than intelligence. Students in the Gifted Center obtained significantly higher scores on five of the six Biographical Inventory Form U subtests, which measured academic performance, creativity, artistic potential, leadership and educational orientation. The results of the subtest Vocational Maturity were not significant. Differences in performance were noted on the SRA Achievement Series with the gifted students achieving higher test scores than regular education students. Both groups, however, scored commensurate with measured abilities as indicated by the Educational Ability Score (EAS). Report card notations indicate that gifted students are more respectful of authority, more courteous, more respectful of property and exercise more self-control than students in regular education programs. On a Moreno sociogram, results were significant in only one category. Gifted students were more readily selected by peers as students preferred to study with than students in regular education programs. The discriminant analysis indicated that 100% of the intellectually gifted students were placed or identified properly. Six students or 10.5% of the population in the regular education program exhibited profiles similar to that of the intellectually gifted students. / Ed. D.

Studies indicate the educational needs of highly gifted students are best met through accelerated learning. It is difficult to recognize very young children that are suited for an accelerated curriculum because younger students frequently lack school records or portfolios used to identify gifted students. This study examined the accuracy of cognitive ability and achievement tests in predicting academic achievement by the end of second grade, correlating test results and final grade averages collected from sixteen children ages five to six who entered a public school program for high-ability learners in kindergarten. A multiple regression analysis indicated the Wechsler Preschool and Primary Scale of Intelligence produced the highest mean IQ score and a strong correlation with reading achievement. The Wechsler Individual Achievement Test contributed in small part to the prediction of academic achievement. The Naglieri Nonverbal Ability Test and the Kaufman Brief Intelligence Test-Second Edition had negative correlations with final grade averages, indicating they are not predictors of academic achievement for these students.

The present study sought to identify variables that predicted parental decision-making regarding their child's participation in a national gifted and talented identification program for middle school students and subsequent participation in recommended educational options. One hundred sixty-nine parents of students who qualified for either the 2001-2002 or 2002-2003 Duke Talent Identification Program participated in the study. The students were drawn from two large public school districts and six small private schools in a large metropolitan area in the southwestern United States. Both quantitative and qualitative methods were used to identify the variables predictive of parental decision-making regarding talent search participation. Each parent completed a questionnaire consisting of both multiple-choice and open-ended questions. Selected parents participated in structured follow-up interviews. The results of the study indicated that parental perception of the helpfulness of school personnel in explaining the purpose and process of the talent search was most predictive of participation in the talent search. The educational level of the father, parent's prior awareness of the purpose and process of talent search, and the number of enrichment activities in which the child had previously participated were also predictive of talent search participation. Qualitative data indicated that parents of both participants and nonparticipants had a limited understanding of the purpose, diagnostic power, and potential benefits of the talent search. Very few parents chose to seek extracurricular or curricular/instructional options following the talent search testing. Qualitative data indicated that parents did not choose these options due to cost, logistical concerns regarding the special programs, and reservations about the developmental appropriateness of such options for middle school students. Although talent searches are sponsored and administered by organizations outside the local school, this study suggests that parents mostly rely on their local school for notification of their child's nomination, information on the purpose and benefits of talent search, interpretation of test scores, and guidance in selecting appropriate curricular or extracurricular follow-up.