Discusses different points of view about the impact of media on learning, motivation, and efficiency gains from instruction. The author's arguments about research and theory of media effects are summarized; reactions to the claim that media do not influence learning are characterized; and responses are given to Robert Kozma's specific criticisms…

Most evaluations of technology-based instruction are poorly designed because of failure to control three common confounding variables: (1) use of different instructional methods in different treatments; (2) presentation of different content in different treatments; and (3) the novelty of new media, which tends to increase early motivation and…

Defines authentic technology and describes how it can be developed and tested. Proposes collaboration among practitioners, technologists, scientists, craftspeople, and artists to develop authentic educational technologies. Offers three examples of current social and educational technologies. (AEF)