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Full-Text Articles in Education

Assessing Conceptual Versus Algorithmic Knowledge: Are We Engendering New Myths In Chemical Education?, Thomas Holme, Kristen Murphy Jan 2011

Assessing Conceptual Versus Algorithmic Knowledge: Are We Engendering New Myths In Chemical Education?, Thomas Holme, Kristen Murphy

Chemistry Publications

Studies over the past two decades have emphasized a gap between relatively weak student performance on conceptual items versus traditional items. The ACS Examinations Institute has released a pair of exams for general chemistry in which items are intentionally paired with one conceptual and one traditional item. This paper describes data from statistical analysis of the item pairs, and notes that for these exams, this gap is not evident, as overall performance is better on conceptual items. Possible implications for teaching and for research in Chemistry Education are noted.


A Valid And Reliable Instrument For Cognitive Complexity Rating Assignment Of Chemistry Exam Items, Karen Knaus, Kristen Murphy, Anja Blecking, Thomas Holme Jan 2011

A Valid And Reliable Instrument For Cognitive Complexity Rating Assignment Of Chemistry Exam Items, Karen Knaus, Kristen Murphy, Anja Blecking, Thomas Holme

Chemistry Publications

The design and use of a valid and reliable instrument for the assignment of cognitive complexity ratings to chemistry exam items is described in this paper. Use of such an instrument provides a simple method to quantify the cognitive demands of chemistry exam items. Instrument validity was established in two different ways: statistically significant correlations between expert-based cognitive complexity ratings and student performance (as measured through statistical difficulty of items), and statistically significant correlations between expert-based cognitive complexity ratings and student mental effort ratings. Key benefits associated with instrument use include an enhanced understanding of the cognitive complexity of chemistry ...


Assessing Conceptual And Algorithmic Knowledge In General Chemistry With Acs Exams, Thomas Holme, Kristen L. Murphy Jan 2011

Assessing Conceptual And Algorithmic Knowledge In General Chemistry With Acs Exams, Thomas Holme, Kristen L. Murphy

Chemistry Publications

In 2005, the ACS Examinations Institute released an exam for first-term general chemistry in which items are intentionally paired with one conceptual and one traditional item. A second-term, paired-questions exam was released in 2007. This paper presents an empirical study of student performances on these two exams based on national samples of students who took the exams as part of a general chemistry course sequence. Psychometric data for student performances are presented in terms of classical difficulty and discrimination indexes, as well as item characteristic curves, as are more commonly used in item response theory. Having these data provided for ...


Assessment Data And Decision Making In Teaching, Thomas Holme Jan 2011

Assessment Data And Decision Making In Teaching, Thomas Holme

Chemistry Publications

Finding avenues to collect and use data in our teaching parallel to the way we use data in research may be an important way to improve educational outcomes.