Construction and Evaluation of an Instrument to Measure Content Knowledge in Biology: The CK-IBI

Autor/inn/en	Großschedl, Jörg; Mahler, Daniela; Harms, Ute
Titel	Construction and Evaluation of an Instrument to Measure Content Knowledge in Biology: The CK-IBI
Quelle	In: Education Sciences, 8 (2018), Artikel 145 (25 Seiten)Infoseite zur Zeitschrift PDF als Volltext kostenfreie Datei Verfügbarkeit
Zusatzinformation	ORCID (Großschedl, Jörg)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	2227-7102
Schlagwörter	Biology; Science Instruction; Pedagogical Content Knowledge; Test Construction; Knowledge Level; Ecology; Evolution; Genetics; Microbiology; Physiology; Preservice Teachers; Science Teachers; Test Validity; Test Reliability; Foreign Countries; Teacher Education Programs; Secondary School Teachers; Germany + Suchen Sie Ihr Suchwort? Biologie; Teaching of science; Science education; Natural sciences Lessons; Naturwissenschaftlicher Unterricht; Pädagogische Kompetenz; Testaufbau; Wissensbasis; Ökologie; Humangenetik; Mikrobiologie; Physiologie; Science; Teacher; Teachers; Science teacher; Wissenschaft; Lehrer; Lehrerin; Lehrende; Testvalidität; Testreliabilität; Ausland; Deutschland
Abstract	The teaching process is well described as an interaction between teacher, student, and content. Thus, it seems obvious that teachers must know the content to help students to learn it. Instruments have been developed to measure teachers' content knowledge (CK) in biology, but few of them have been provided to the scientific community. Furthermore, most of them have a topic-specific approach, so there is a need for a more comprehensive measure. In efforts to meet this need we have developed an instrument called the CK in biology inventory (CK-IBI), which has a broader scope than previously published instruments and covers knowledge of five biological disciplines (i.e., ecology, evolution, genetics and microbiology, morphology, and physiology). More than 700 pre-service biology teachers were enrolled to participate in tests to assess the instrument's objectivity, reliability, and validity in two cross-sectional evaluations. Item and scale analyses as well as validity checks indicate that the final version of the CK-IBI (37 items; Cronbach's a = 0.83) can be scored objectively, is unidimensional, reliable, and validly measures pre-service biology teachers' CK. As the instrument was used in a German context, it has been translated into English to enable its scrutiny and use by international communities. (As Provided).
Anmerkungen	MDPI AG. Klybeckstrasse 64, 4057 Basel, Switzerland. Tel: e-mail: indexing@mdpi.com; Web site: http://www.mdpi.com
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01