TY - JOUR ID - 114358 TI - Theoretical Misconceptions and Misuse of Statistics: A Critique of Khodadady and Hashemi (2011) and Some General Remarks on Cronbach’s Alpha JO - International Journal of Language Testing JA - IJLT LA - en SN - AU - Grotjahn, Rüdiger AD - Seminar für Sprachlehrforschung (Department of Foreign Language Research), Ruhr-Universität Bochum, Bochum, Germany. Y1 - 2012 PY - 2012 VL - 2 IS - 1 SP - 20 EP - 27 KW - C-test KW - Authenticity KW - Reliability KW - Cronbach’s alpha KW - Guttman’s Lambda2 KW - Local Stochastic Dependence KW - LID DO - N2 - This article comments on theoretical misconceptions and misuses of statistics in Khodadady & Hashemi’s (2011) paper “Validity and C-Tests: The Role of Text Authenticity”. Firstly, it is pointed out that the pertinent C-Test literature is not adequately dealt with. Then, it is argued that the authors misconstrue the notion of the C-Test when they apply the term to a single (longer) C-Test text such as their AC-Test (Authentic C-Test). Subsequently, it is shown that there are serious flaws in the data analysis and interpretation. Here, the main focus is on local item dependence, which is not taken into account, and misconceptions with regard to Cronbach’s Alpha, an issue of relevance to a wider audience. UR - https://www.ijlt.ir/article_114358.html L1 - https://www.ijlt.ir/article_114358_a87878d865b167f94c1931376a4eb201.pdf ER -