Controlled Experiment Replication in Evaluation of E-Learning System's Educational Influence

Autor/inn/en	Grubisic, Ani; Stankov, Slavomir; Rosic, Marko; Zitko, Branko
Titel	Controlled Experiment Replication in Evaluation of E-Learning System's Educational Influence
Quelle	In: Computers & Education, 53 (2009) 3, S.591-602 (12 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0360-1315
DOI	10.1016/j.compedu.2009.03.014
Schlagwörter	Control Groups; Research Design; Computer Assisted Instruction; Artificial Intelligence; Effect Size; Academic Achievement; Pretests Posttests; Evaluation Methods; Computer Uses in Education + Suchen Sie Ihr Suchwort? Forschungsdesign; Computer based training; Computerunterstützter Unterricht; Künstliche Intelligenz; Schulleistung; Computernutzung
Abstract	We believe that every effectiveness evaluation should be replicated at least in order to verify the original results and to indicate evaluated e-learning system's advantages or disadvantages. This paper presents the methodology for conducting controlled experiment replication, as well as, results of a controlled experiment and an internal replication that investigated the effectiveness of intelligent authoring shell eXtended Tutor-Expert System (xTEx-Sys). The initial and the replicated experiment were based on our approach that combines classical two-group experimental design and with factoral design. A trait that distinguishes this approach from others is the existence of arbitrary number of checkpoint-tests to determine the effectiveness in intermediate states. We call it a pre-and-post test control group experimental design with checkpoint-tests. The gained results revealed small or even negative effect sizes, which could be explained by the fact that the xTEx-Sys's domain knowledge presentation is rather novel for students and therefore difficult to grasp and apply in earlier phases of the experiment. In order to develop and improve the xTEx-Sys, further experiments must be conducted. (Contains 6 tables and 5 figures.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10