Cognitive load theory: Implications for assessment in pharmacy education

The concept of mental workload is well studied from a learner's perspective but has yet to be better understood from the perspective of an assessor. Mental workload is largely associated with cognitive load theory, which describes three different types of load. Intrinsic load deals with the complexity of the task, extraneous load describes distractors to the task at hand, and germane load focuses on the development of schemas in working memory for future recall. Studies from medical education show that all three types of load are relevant when considering rater -based assessment (e.g. Objective Structured Clinical Examinations (OSCEs), or experiential training). Assessments with high intrinsic and extraneous load may interfere with assessors' attention and working memory and result in poorer quality assessment. Reducing these loads within assessment tasks should therefore be a priority for pharmacy educators. This commentary aims to provide a theoretical overview of mental workload in assessment, outline research findings from the medical education context, and propose strategies to be considered for reducing mental workload in rater-based assessments relevant to pharmacy education. Suggestions for future research are also addressed.