NotesFAQContact Us
Search Tips
Peer reviewed Peer reviewed
Direct linkDirect link
ERIC Number: EJ863865
Record Type: Journal
Publication Date: 2009
Pages: 15
Abstractor: As Provided
ISSN: ISSN-1449-5554
Learning Efficacy of Simultaneous Audio and On-Screen Text in Online Lectures
Debuse, Justin C. W.; Hede, Andrew; Lawley, Meredith
Australasian Journal of Educational Technology, v25 n5 p748-762 2009
This study investigates the application of voice recognition technology to online lectures focusing on the efficacy of the text component of a multimedia presentation. Specifically, participants were provided with online access to multimedia instructional packages comprising an image of the lecturer with accompanying computer slides, plus simultaneous scrolling text of the words spoken during the lecture. Participants' knowledge was measured before and after the lecture presentation. Contrary to cognitive load theory, the results did not show a negative redundancy effect, that is, there were no differences in learning efficacy between the conditions with and without on-screen text. Further, participants found no difference between text edited for semantic breaks compared to unedited text. The implications for online instructional design are that resources are better spent providing a combination of audio and slides rather than text and slides, and that if text is provided then editing for semantic line breaks is not warranted. (Contains 3 tables and 1 figure.)
Australasian Society for Computers in Learning in Tertiary Education. Ascilite Secretariat, P.O. Box 44, Figtree, NSW, Australia. Tel: +61-8-9367-1133; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Evaluative
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Australia; Fiji; Malaysia