NEPS technical report for science. Scaling results of starting cohort 2 in kindergarten.

Autor/in	Schöps, Katrin
Titel	NEPS technical report for science. Scaling results of starting cohort 2 in kindergarten.
Quelle	Bamberg: Otto-Friedrich-Univ. (2013), 25 S. PDF als Volltext kostenfreie Datei (1); PDF als Volltext kostenfreie Datei (2) Link als defekt meldenVerfügbarkeit
Reihe	NEPS Working Papers. 24
Beigaben	Literaturangaben
Sprache	englisch
Dokumenttyp	online; Monographie
Schlagwörter	Grundbildung; Bildungsforschung; Empirische Untersuchung; Forschungsdesign; Skalierung; Deutschland; Kindergarten; Naturwissenschaften; Skalierung; Bildungsforschung; Kindergarten; Naturwissenschaften; Deutschland
Abstract	The National Educational Panel Study (NEPS) aims at investigating the development of competences across the whole life span and designs tests for assessing these different competence domains. In order to evaluate the quality of the competence tests, a wide range of analyses have been performed based on item response theory (IRT). This paper describes the data on scientific literacy for starting cohort 2 in kindergarten. Next to descriptive statistics of the data, the scaling model applied to estimate competence scores, analyses performed to investigate the quality of the scale, as well as the results of these analyses are presented. The test consisted of 26 items and was administered to 2,955 children. A partial credit model was used for scaling the data. Item fit statistics, differential item functioning, Rasch-homogeneity, and the tests' dimensionality were evaluated to ensure the quality of the test. The results show that the items, except for one, exhibited good item fit and measurement invariance across various subgroups. Moreover, the test showed a high reliability. As the correlations between the two knowlegde domains are very high in a multidimensional model, the assumption of unidimensionality seems adequate. However, a justified point of criticism is that the test lacks very difficult items. But overall, the results revealed good psychometric properties of the science test, thus supporting the estimation of a reliable scientific literacy score. This paper describes the data available in the Scientific Use File and provides ConQuest-Syntax for scaling the data. (DIPF/Orig.).
Erfasst von	DIPF \| Leibniz-Institut für Bildungsforschung und Bildungsinformation, Frankfurt am Main
Update	2014/4