Conspectus Collection Assessment

The levels form an ordinal scale anchored to shared definitions: 0 is out of scope, 1 minimal information, 2 basic information, 3 instructional or study-support level, 4 research level supporting doctoral and faculty work, and 5 comprehensive, aiming at exhaustive coverage of a subject. The IFLA conspectus guidelines record each subject not with one level but with an existing strength, a current collecting intensity, and a goal, sometimes refined with language-coverage codes. The levels are categories, not precise counts, so consistency across assessors depends on training and verification.

The conspectus measures the depth and intensity of holdings against a standardized subject framework; it answers 'how strong and how actively collected is each subject.' Use studies and citation-analysis approaches answer a different question: how much the collection is actually consulted or how well it matches what local researchers cite. The two are complementary. A subject can rate high on the conspectus yet be little used, or be heavily used despite shallow holdings, so libraries often combine conspectus profiling with use or citation evidence.

The principal remedy is White's brief-test methodology, which provides short checklists of titles graded into ascending power levels. The library records which titles it holds, and the holdings pattern across the power levels maps to a conspectus level in a reproducible way: holding titles only at the easy end tests lower than holding titles across all bands. Combining these objective checklist tests with documented level definitions and assessor training substantially reduces the inter-assessor variability that critics of the conspectus have long noted.