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1.
One wrong assumption about reality is sufficient to ensure the failure of education policy. For a variety of reasons, too many people have ignored realities in policies such as the No Child Left Behind Act. Individuals who are serious about reforming or improving education, general or special, must confront realities in at least the following areas: measurement, statistical distributions, measurement error, labels, special services, teacher responsibilities, and teacher training. Enacting or supporting education policy that is known to be seriously flawed is unacceptable and tantamount to the criminal conduct of someone who markets goods with known safety defects or harmful effects or of someone who ignores critical realities in the conduct of business. 相似文献
2.
Profiles of emergent literacy skills among preschool children who are at risk for academic difficulties 总被引:1,自引:0,他引:1
Sonia Q. Cabell Laura M. JusticeTimothy R. Konold Anita S. McGinty 《Early childhood research quarterly》2011,26(1):1
The purpose of this study was to explore patterns of within-group variability in the emergent literacy skills of preschoolers who are at risk for academic difficulties. We used the person-centered approach of cluster analysis to identify profiles of emergent literacy skills, taking into account both oral language and code-related skills. Participants were 492 preschoolers (aged 42-60 months) enrolled in needs-based programs. In the fall of the academic year, children were administered eight measures of emergent literacy: four oral language measures (i.e., expressive and receptive grammar, expressive and receptive vocabulary) and four code-related measures (i.e., print concepts, alphabet knowledge, name writing, and rhyme). Controlling for age, hierarchical-agglomerative and K-means cluster analysis procedures were employed. Five psychometrically sound profiles emerged: highest emergent literacy (prevalence = 14%); three profiles with average oral language and differential code-related abilities (16%, 24%; 23%); and lowest oral language with broad code-related weaknesses (23%). Profiles were then compared on midyear teacher ratings of emergent literacy as well as end-of-kindergarten literacy performance; results provided convergent evidence of predictive validity. This study highlights the considerable heterogeneity of emergent literacy abilities within an “at-risk” group. The resulting profiles have theoretical and practical relevance when examining both concurrent relationships between oral language and code-related skills as well as longitudinal relationships between early patterns of performance and later reading achievement. 相似文献
3.
Timothy W. Curby Kathleen Moritz Rudasill Sara E. Rimm‐Kaufman Timothy R. Konold 《Psychology in the schools》2008,45(8):729-744
The purpose of this study is to examine how children's starting level and development of social competence (i.e., task orientation and peer sociability) during kindergarten and first grade predict gifted program enrollment by third grade, even after considering children's cognitive ability. A second purpose is to examine the extent to which the relationship between children's social competence and gifted program enrollment differs depending on children's socioeconomic status (SES), ethnicity, and gender. Latent growth curve analyses conducted on 347 children revealed that students enrolled in gifted programming were not only those high in cognitive ability, but also those showing early task orientation. Neither peer sociability's initial status nor growth was a significant predictor of gifted enrollment. Multigroup comparisons demonstrated different predictive paths for higher versus lower SES groups. Implications are discussed including important questions raised by this study and the need for teacher training in the identification of giftedness. © 2008 Wiley Periodicals, Inc. 相似文献
4.
Ji Hoon Ryoo Timothy R. Konold Jeffrey D. Long Victoria J. Molfese Xin Zhou 《Structural equation modeling》2017,24(6):897-910
Applications of growth mixture modeling have become widespread in the fields of medicine, public health, and the social sciences for modeling linear and nonlinear patterns of change in longitudinal data with presumed heterogeneity with respect to latent group membership. However, in contrast to linear approaches, there has been relatively less focus on methods for modeling nonlinear change. We introduce a nonlinear mixture modeling approach for estimating change trajectories that rely on the use of fractional polynomials within a growth mixture modeling framework. Fractional polynomials allow for more parsimonious and flexible models in comparison to conventional polynomial models. The procedures are illustrated through the use of math ability scores obtained from 499 children over a period of 3 years, with 4 measurement occasions. Techniques for identifying the best empirically derived growth mixture model solution are also described and illustrated by way of substantive example and a simulation. 相似文献
5.
Sweat lactate reflects eccrine gland metabolism. However, the metabolic tendencies of eccrine glands in a hot versus thermoneutral environment are not well understood. Sixteen male volunteers completed a maximal cycling trial and two 60-min cycling trials [30°C?=?30±1°C and 18°C?=?18±1°C wet bulb globe temperature (WBGT)]. The participants were requested to maintain a cadence of 60 rev?·?min?1 with the intensity individualized at ~ 90% of the ventilatory threshold. Sweat samples at 10, 20, 30, 40, 50 and 60?min were analysed for lactate concentration. Sweat rate at 30°C (1380±325?ml?·?h?1) was significantly greater (P<0.05) than at 18°C (632±311?ml?·?h?1). Sweat lactate concentration was significantly greater (P<0.05) at each time point during the 18°C trial, with values between trials tending to converge across time. During the 30°C trial, both heart rate (20, 30, 40, 50 and 60?min) and rectal temperature (30, 40, 50 and 60?min) were significantly higher than in the 18°C trial. Higher sweat lactate concentrations coupled with lower sweat rates may indicate a greater relative contribution of oxygen-independent metabolism within eccrine glands during exercise at 18°C. Decreases in sweat lactate concentration across time suggest either greater dilution due to greater sweat volume or increased reliance on aerobic metabolism within eccrine glands. The convergence of lactate concentrations between trials may indicate that time-dependent modifications in sweat gland metabolism occur at different rates contingent partially on environmental conditions. 相似文献
6.
Karen L. Ford Sonia Q. Cabell Timothy R. Konold Marcia Invernizzi Lauren B. Gartland 《Reading and writing》2013,26(6):889-912
This study explored heterogeneity in literacy development among 2,300 Hispanic children receiving English as a Second Language (ESL) services at the start of kindergarten. Two research questions guided this work: (1) Do Spanish-speaking English language learners receiving ESL services in the fall of kindergarten demonstrate homogeneous early literacy skills, or are there distinct patterns of achievement across measures of phonological awareness, alphabet knowledge, and orthography? and (2) if there are distinct profiles, to what extent do they predict literacy achievement at the end of kindergarten and the beginning of first grade? Using cluster analysis, the authors identified four distinct literacy profiles derived from fall kindergarten measures of phonological awareness, alphabet knowledge, and phonetic spelling. These profiles were found to be associated with literacy outcomes in spring of kindergarten and fall of first grade. The two profiles that were associated with greater success on later measures of concept of word in text, letter sound knowledge, word reading, and spelling were the two that included stronger performance on orthographic skills (i.e., alphabet knowledge and phonetic spelling). These findings demonstrated that there is heterogeneity among Hispanic ESL students at kindergarten entry and suggested that literacy instruction must be differentiated from the very beginning in order to meet students’ individual needs. The findings also suggested that orthographic skills should be assessed and taught early on. While phonological awareness may be a necessary precursor to reading, phonological awareness in the absence of orthographic skills may not be sufficient. 相似文献
7.
The purpose of this study was to identify subgroups of adult basic education (ABE) learners with different profiles of skills
in the core reading components of decoding, word recognition, spelling, fluency, and comprehension. The analysis uses factor
scores of those 5 reading components from on a prior investigation of the reliability and construct validity of measures of
reading component skills (MacArthur, Konold, Glutting, & Alamprese, 2010). In that investigation, confirmatory factor analysis found that a model with those 5 factors fit the data best and fit equally
well for native and non-native English speakers. The study included 486 students, 334 born or educated in the United States
(native) and 152 not born nor educated in the US (non-native) but who spoke English well enough to participate in English
reading classes. The cluster analysis found an 8-cluster solution with good internal cohesion, external isolation, and replicability
across subsamples. Of the 8 subgroups, 4 had relatively flat profiles (range of mean scores across factors <0.5 SD), 2 had
higher comprehension than decoding, and 2 had higher decoding than comprehension. Profiles were consistent with expectations
regarding demographic factors. Non-native speakers were overrepresented in subgroups with relatively higher decoding and underrepresented
in subgroups with relatively higher comprehension. Adults with self-reported learning disabilities were overrepresented in
the lowest performing subgroup. Older adults and men were overrepresented in subgroups with lower performance. The study adds
to the limited research on the reading skills of ABE learners and, from the perspective of practice, supports the importance
of assessing component skills to plan instruction. 相似文献
8.
Erin R. Ottmar Timothy R. Konold Robert Q. Berry David W. Grissmer Claire E. Cameron 《Learning Environments Research》2014,17(1):127-138
Psychometric properties of 24 items from the fifth grade Early Childhood Longitudinal Study-Kindergarten Cohort Mathematics Teacher Questionnaire were investigated in a sample of 5,181 participants. These items asked teachers to report how often they had their classroom students engage in different mathematics content, skills and instructional practices. Exploratory factor analyses were employed to evaluate the underlying factor structure of the selected items. Results suggest that these items effectively measure three distinct latent constructs that are specific to mathematics instruction: Instructional Practices for Teaching Mathematics, Developing Number Sense, and Beyond Number Sense. These results support the use of this instrument as a guide for research and policy, or to inform teacher curriculum decisions. 相似文献
9.
The aim of this study was to compare the somatotype and size of elite female basketball players in terms of playing position and team performance. Anthropometry and somatotype data were collected on 168 players from 14 countries before the Women's World Basketball Championship, Australia, 1994. There were 64 guards (mean?±?s: age 25.4?±?3.3 years, height 1.72?±?0.06?m, mass 66.1?±?6.2?kg, somatotype?=?2.9?–?3.9?–?2.6), 57 forwards (age 25.2?±?3.8 years, height 1.81?±?0.06?m, mass 73.3?±?5.9?kg, somatotype?=?2.8?–?3.5?–?3.2) and 47 centres (age 24.1?±?3.1 years, height 1.90?±?0.06?m, mass 82.6?±?8.2?kg, somatotype?=?3.2?–?3.1?–?3.4). Mean somatotypes by position were significantly different (F?=?7.73, P?<?0.01). Guards had greater mesomorphy than centres and less ectomorphy than forwards and centres. When discriminant function analysis was applied to endomorphy, mesomorphy, ectomorphy, age, height and mass, only height, mass and ectomorphy entered (Wilks' λ?=?0.351, F?=?31.40, P?<?0.000), 70% of the variance was accounted for, and 72% of players were correctly classified. In the four top versus four bottom teams, guards were taller and more ectomorphic, forwards were taller, with lower mesomorphy and higher ectomorphy, and centres did not differ. Thus there are some differences in somatotypes by position and team placing, but the combination of height, mass and ectomorphy provide the best differentiation by position. 相似文献
10.
This study employed a correlated trait-correlated method application of confirmatory factor analysis to disentangle trait and method variance from measures of attention-deficit/hyperactivity disorder obtained at the college level. The two trait factors were Diagnostic and Statistical Manual of Mental Disorders-Fourth Edition (DSM-IV ) Inattention and DSM-IV Hyperactivity-Impulsivity. The two source factors were self-reports and parent-reports. Data were collected for an epidemiological sample (N = 1,079) of college freshmen stratified for race/ethnicity, gender, and ability level according to national targets for the U.S. college population. Results revealed (a) parents' ratings were better measures of internalizing behavioral dimensions and that students' ratings were better measures of externalizing dimensions of behavior, (b) informants have a greater impact on behavior ratings than the behavioral construct that is presumed to be the primary cause of the behavior as measured by the CARE, (c) relationships among the method factors revealed a substantial amount of unique variance among informants, and (d) relationships among trait factors were largely within expectation. 相似文献