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Ethnically diverse students' knowledge structures in first‐semester organic chemistry
Author(s) -
Lopez Enrique J.,
Shavelson Richard J.,
Nandagopal Kiruthiga,
Szu Evan,
Penn John
Publication year - 2014
Publication title -
journal of research in science teaching
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.067
H-Index - 131
eISSN - 1098-2736
pISSN - 0022-4308
DOI - 10.1002/tea.21160
Subject(s) - ethnic group , mathematics education , psychology , diversity (politics) , science education , academic achievement , proposition , chemistry , attrition , cultural diversity , concept learning , sociology , epistemology , medicine , philosophy , dentistry , anthropology
Chemistry courses remain a challenge for many undergraduate students. In particular, first‐semester organic chemistry has been labeled as a gatekeeper with high attrition rates, especially among students of color. Our study examines a key factor related to conceptual understanding in science and predictive of course outcomes—knowledge structures. Previous research on knowledge structures has focused on differences between experts and novices. Given the increasing ethnic diversity of college classrooms and research indicating unique differences in certain higher order cognitive processes associated cultural practices and ethnicity, it is important to investigate whether similar patterns exist with respect to knowledge structures. Our study utilized concept maps to measure knowledge structures. Two separate analyses where performed to determine whether or not ethnically diverse students' organize their knowledge of organic chemistry content in structurally different ways. The first analysis utilized concept map proposition scoring to examine the influence of prior science achievement and ethnicity on knowledge structures. The second analysis examined holistic map structures to determine whether or not ethnically diverse students show qualitatively distinct structures overall. Results show significant mean differences on concept map proposition scores related to both prior science achievement and ethnic group membership. However, examination of holistic structures revealed that students' qualitative holistic structures did not vary by ethnic group membership. Taken together, our findings suggest that variation in students' knowledge structures are related to prior science achievement across ethnic groups, not qualitative differences in the ways ethnically diverse students' structure knowledge. Implications for teaching and learning in organic chemistry are discussed. © 2014 Wiley Periodicals, Inc. J Res Sci Teach 51: 741–758, 2014