Abstract: | This research investigated expertise development among instructional designers by tracking novice designers' unfolding perceptions of instructional design (ID), design‐related self‐perceptions, and other individual differences. It examined development toward ID expertise from multiple aspects: processes, product, and cognition, through a case study approach. Evidence included qualitative data from interviews, design artifacts, and metacognitive essays, along with quantitative data from questionnaires which assessed goals, need for structure, need for cognition, previous design competence, and design self‐efficacy. Findings indicated that it was not one single characteristic, but the interaction of various factors, that most profoundly seem to influence the development of ID expertise. Relevant characteristics included: perceptions about learning, knowledge and ID; individual needs and learning strategies; and background experiences and orientations. Research in this field will help us to better understand the processes that lead to the development of ID expertise, and to develop better approaches to preparing future instructional designers. |