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31.
The present longitudinal study aimed to investigate the development of word decoding skills during incremental phonics instruction in Dutch as a transparent orthography. A representative sample of 973 Dutch children in the first grade (M age = 6;1, SD = 0;5) was exposed to incremental subsets of Dutch grapheme–phoneme correspondences during 6 consecutive blocks of 3 weeks of phonics instruction. Children’s accuracy and efficiency of curriculum embedded word decoding were assessed after each incremental block, followed by a standardized word decoding measurement. Precursor measures of rapid naming, short-term memory, vocabulary, phonological awareness, and letter knowledge were assessed by the end of kindergarten and subsequently related to the word decoding efficiency in the first grade. The results showed that from the very beginning, children attained ceiling levels of decoding accuracy, whereas their efficiency scores increased despite the incremental character of the consecutive decoding assessments embedded in the curriculum. Structural equation modelling demonstrated high stability of the individual differences assessed by word decoding efficiency during phonics instruction during the first 5 months of the first grade. Curriculum embedded word decoding was highly related to standardized word decoding after phonics instruction was completed. Finally, early literacy and lexical retrieval, and to a lesser extent verbal and visual short term memory, predicted the first fundamental processes of mastering word decoding skills. 相似文献
32.
Two experiments were conducted in order to explore the role of prefix identification in the reading of Dutch bisyllabic words. Although Dutch orthography is highly regular, several deviations from a one-to-one correspondence exist. A case in point is the grapheme E which can represent the vowels ε, e and œ in polysyllabic words. In Experiment 1, 33 third-grade children and 46 sixth-grade children were presented a list of randomly ordered bisyllabic words starting with the letter string BE and the first syllable being (1) a real prefix, (2) a phonological prefix (same sound pattern as a prefix), or (3) a pseudoprefix (sound pattern deviant from a prefix). Pseudowords starting with the same letter string were also presented. The results showed that words starting with a real or a phonological prefix were identified more accurately than words starting with a pseudoprefix. For the pseudowords, a predominant interpretation of the first part as a prefix was also evidenced. In Experiment 2, a lexical decision task was administered to 35 third-grade children, 33 sixth-grade children, and 26 adults. Words with a phonological prefix and words with a pseudoprefix were randomly presented along with other word types. The data showed both children and adults to retrieve words with phonological prefixes more quickly and more accurately than words with a pseudoprefix. The results are discussed with reference to current models of word decoding. 相似文献
33.
Michael S. Waltman 《Journal of Applied Communication Research》2013,41(4):295-308
An important area of applied communication research is teachers’ use of classroom discipline and management strategies which have become known as Behavior Alteration Techniques (BATs). The instrument commonly used to measure teachers’ use of BATs is the checklist of Behavior Alteration Techniques. The purpose of the present research was to assess the convergent validity of the checklist of Behavior Alteration Techniques. Thus, this research attempted to assess the extent to which teachers’ likelihood‐of‐use ratings converge with other measures of teacher BAT use. It was hypothesized that the correlation between students’ and student teachers’ ratings of the frequency of teacher BAT use would be significantly higher than the correlation of either index with teachers’ likelihood‐of‐use ratings. This hypothesis was not supported: The BATs checklist did not fail this test of convergent validity. However, the results do not support the claim that the BATs checklist passed this test of convergent validity. Explanations for these results are offered and their implications are discussed. In brief, the present results suggest important considerations in the study of this important area of applied communication. 相似文献
34.
A systematic empirical comparison of different approaches for normalizing citation impact indicators
We address the question how citation-based bibliometric indicators can best be normalized to ensure fair comparisons between publications from different scientific fields and different years. In a systematic large-scale empirical analysis, we compare a traditional normalization approach based on a field classification system with three source normalization approaches. We pay special attention to the selection of the publications included in the analysis. Publications in national scientific journals, popular scientific magazines, and trade magazines are not included. Unlike earlier studies, we use algorithmically constructed classification systems to evaluate the different normalization approaches. Our analysis shows that a source normalization approach based on the recently introduced idea of fractional citation counting does not perform well. Two other source normalization approaches generally outperform the classification-system-based normalization approach that we study. Our analysis therefore offers considerable support for the use of source-normalized bibliometric indicators. 相似文献
35.
Ludo Waltman 《Journal of Informetrics》2012,6(4):700-711
There are different ways in which the authors of a scientific publication can determine the order in which their names are listed. Sometimes author names are simply listed alphabetically. In other cases, authorship order is determined based on the contribution authors have made to a publication. Contribution-based authorship can facilitate proper credit assignment, for instance by giving most credits to the first author. In the case of alphabetical authorship, nothing can be inferred about the relative contribution made by the different authors of a publication.In this paper, we present an empirical analysis of the use of alphabetical authorship in scientific publishing. Our analysis covers all fields of science. We find that the use of alphabetical authorship is declining over time. In 2011, the authors of less than 4% of all publications intentionally chose to list their names alphabetically. The use of alphabetical authorship is most common in mathematics, economics (including finance), and high energy physics. Also, the use of alphabetical authorship is relatively more common in the case of publications with either a small or a large number of authors. 相似文献
36.
The impact of concept mapping and visualization on the learning of secondary school chemistry students 总被引：1，自引：0，他引：1
Ludo Brandt Jan Elen Jacqueline Hellemans Luc Heerman Ina Couwenberg Liesbeth Volckaert 《International Journal of Science Education》2013,35(12):1303-1313
The aim of this study was to examine whether the construction of integrated knowledge structures by students can be stimulated by concept mapping and by better visualization of concepts and their interrelationships. The investigation was carried out in regular teaching settings: chemistry courses in secondary schools in Flanders, in the domain of electrochemistry. A significant positive effect of extra attention to visualization on the learning achievement of students was found. However, significant effects of concept mapping as an instruction method could not be detected under the given research conditions. 相似文献
37.
Ludo Verhoeven 《Peabody Journal of Education》2013,88(3-4):127-144
38.
Beatty and Payne (1984) recently presented data allegedly demonstrating that assessments of cognitive complexity based on Crockett's popular Role Category Questionnaire (RCQ) are severly confounded by “loquacity,” the simple amount of verbal response to stimuli. The present paper responds critically to the claims of Beatty and Payne, arguing that these researchers employed a flawed measure of loquacity and inappropriate data analytic procedures. In order to better clarify the influence of loquacity on sophisticated social‐cognitive and communicative functioning, two empirical studies are reported in which alternative measures of loquacity were employed. In neither of these studies was loquacity found significantly associated with social‐cognitive or communicative abilities. 相似文献
39.
Krenca Klaudia Segers Eliane Chen Xi Shakory Sharry Steele Jeffrey Verhoeven Ludo 《Reading and writing》2020,33(2):267-291
Reading and Writing - The 1-year longitudinal study presented here examined the extent to which the ability to build phonologically specific lexical entries as a result of increasing vocabulary... 相似文献
40.
Caressa Janssen Eliane Segers James M. McQueen Ludo Verhoeven 《Early education and development》2019,30(3):375-399
Research Findings: The present study compared effects of explicit instruction on and practice with the phonological form of words (form-focused instruction) versus explicit instruction on and practice with the meaning of words (meaning-focused instruction). Instruction was given via interactive storybook reading in the kindergarten classroom of children learning Dutch. We asked whether the 2 types of instruction had different effects on vocabulary development and 2 precursors of reading ability—phonological awareness and letter knowledge—and we examined effects on these measures of the ability to learn new words with minimal acoustic-phonetic differences. Learners showed similar receptive target-word vocabulary gain after both types of instruction, but learners who received form-focused vocabulary instruction showed more gain in semantic knowledge of target vocabulary, phonological awareness, and letter knowledge than learners who received meaning-focused vocabulary instruction. Level of ability to learn pairs of words with minimal acoustic-phonetic differences predicted gain in semantic knowledge of target vocabulary and in letter knowledge in the form-focused instruction group only. Practice or Policy: A focus on the form of words during instruction appears to have benefits for young children learning vocabulary. 相似文献