Assessing High Performers in the Life Sciences: Characteristics of Exams Used at the International Biology Olympiad (IBO) and Their Implications for Life Science Education.

CBE Life Sci Educ · 2020 · PMC8693943 · PMID 33215972

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an increasing trendno p-value reported

Furthermore, IBO items often involved several core ideas, with an increasing trend from 1.9/item (1993) to 2.5/item (2014, 2017).

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