Education Commons^™

Measuring The Value Of Professional Indexing, Philip Hider, Pru Mitchell, Robert Parkes

Pru Mitchell

This study provides both a quantitative estimate and qualitative analysis of the additional ‘retrieval power’ that professionally assigned subject indexing affords users of a typical database in the field of education. A full version of Informit’s A+ Education database and one stripped of its subject indexing were searched by four research assistants tasked with compiling exhaustive bibliographies on forty-eight topics. The searchers were then surveyed about their use of the two databases, while their bibliographies and search logs were also examined. A two-way ANOVA model was constructed to estimate the percentage of additional resources found by the searchers on the …