“…The definitions found in the literature usually refer to at least three components of expertise: first, a field of specialized knowledge in which expertise is observable (domain knowledge); second, an outstanding expert's performance in this field; and third, the consistency (i.e., time-lasting and reproducibility) of such a performance. The measurement of expertise usually involves comparisons (novice vs. expert), peer recognition or objective measures of efficiency, and effectiveness in domain knowledge (Charness & Tuffiash, 2008;Germain & Tejeda, 2012). In expert elicitation, a priori selection (based on publication record, group membership or résumé), co-nomination and peer suggestions are frequent (Butler, Thomas, & Pintar, 2015;EPA, 2011;Meyer & Booker, 2001;Nedeva, Georghiou, Loveridge, & Cameron, 1996), because it is quite difficult to develop tailored tests of knowledge domain effectiveness.…”