{"type":"rich","version":"1.0","provider_name":"Transistor","provider_url":"https://transistor.fm","author_name":"The Knowledge Architects: Building Wisdom in the Information Age","title":"Episode 23 | The Expertise Reversal Effect","html":"","width":"100%","height":180,"duration":811,"description":"Episode SummaryImagine the same fully worked, step by step example handed to a beginner and an expert. Common sense says it helps both. Decades of research show something stranger: the very lesson that accelerates the novice actively slows down the expert. The instructional support that beginners need becomes redundant for intermediates and harmful for experts. This is the expertise reversal effect, and it overturns one of our most basic assumptions about teaching.In this episode we trace the discovery of the effect through Slava Kalyuga's apprentice studies at the University of New South Wales, unpack the working memory mechanism behind it, walk through the surprising catalogue of cognitive load effects that reverse with expertise, and look at the design response: guidance fading, completion problems, faded worked examples, and adaptive intelligent tutors. We close with the social cousin of the effect, the expert blind spot, which explains why the people who design instruction are systematically miscalibrated about who they are designing for.Key Topics CoveredThe counterintuitive finding: good instruction for a novice can be bad instruction for an expertThe Australian trade apprentice studies (1998 to 2001) and the controlled expertise gradientThe 2003 Kalyuga, Ayres, Chandler and Sweller paper that named the effectWorking memory as a four chunk bottleneck (Cowan) and schemas as chunk compressors\"Co referring internal and external representations\" as the mechanism of harmElement interactivity as the deeper account (Chen, Kalyuga and Sweller, 2017)Long term working memory (Ericsson and Kintsch, 1995) as the positive expertise mechanismThe catalogue of reversals: worked examples, split attention, modality, redundancy, imagination, segmentation, variability of practiceThe imagination effect that only emerges in expertsGuidance fading as the practical responseCompletion problems (Van Merriënboer, 1990) and faded worked examples (Renkl et al., 2002)Adaptive fading in...","thumbnail_url":"https://img.transistorcdn.com/FqjMDaQUSm1bYfkwwD6aDUnSGdwLjCiheWhxBb00zow/rs:fill:0:0:1/w:400/h:400/q:60/mb:500000/aHR0cHM6Ly9pbWct/dXBsb2FkLXByb2R1/Y3Rpb24udHJhbnNp/c3Rvci5mbS84YjIz/YzkwMzlmNGM5YmEw/NTJkOGYyMTk0YTMw/ZWM0Zi5wbmc.webp","thumbnail_width":300,"thumbnail_height":300}