Split attention effect

Abstract: Cognitive load theory has been designed to provide guidelines intended to assist in the presentation of information in a manner that encourages learner activities that optimize intellectual performance. The theory assumes a limited capacity working memory that includes partially independent subcomponents to deal with auditory/verbal material and visual/2- or 3-dimensional information as well as an effectively unlimited long-term memory, holding schemas that vary in their degree of automation. These structures and functions of human cognitive architecture have been used to design a variety of novel instructional procedures based on the assumption that working memory load should be reduced and schema construction encouraged. This paper reviews the theory and the instructional designs generated by it.

Abstract: This work presents a systematic analysis of the psychological phenomena associated with the concept of mental representations--also referred to as cognitive or internal representations. A major restatement of a theory the author developed in his 1971 book, Imagery and Verbal Processes, it covers phenomena from the earlier period that remain relevant today but emphasizes cognitive problems and paradigms that have since emerged more fully. The author proposes that performance in memory and other cognitive tasks is mediated not only by linguistic processes but also by a distinct nonverbal imagery model of thought as well. He discusses the philosophy of science associated with the dual coding approach, emphasizing the advantages of empiricism in the study of cognitive phenomena and showing that the fundamentals of the theory have stood up well to the empirical challenges over the years. An important contribution to the understanding of form and function of human knowledge, this book will be of interest to students and researchers in cognitive psychology, cognitive science, linguistics, and philosophy.

Abstract: First, we propose a theory of multimedia learning based on the assumptions that humans possess separate systems for processing pictorial and verbal material (dual-channel assumption), each channel is limited in the amount of material that can be processed at one time (limited-capacity assumption), and meaningful learning involves cognitive processing including building connections between pictorial and verbal representations (active-processing assumption). Second, based on the cognitive theory of multimedia learning, we examine the concept of cognitive overload in which the learner's intended cognitive processing exceeds the learner's available cognitive capacity. Third, we examine five overload scenarios. For each overload scenario, we offer one or two theory-based suggestions for reducing cognitive load, and we summarize our research results aimed at testing the effectiveness of each suggestion. Overall, our analysis shows that cognitive load is a central consideration in the design of multimedia instru...