This paper defines a framework and categorization of the types of evidence required to prove the value and impact of libraries. It questions the limitations of current measurement for library value, and hence for contributing to academic and research library planning and advocacy. The paper describes and draws on some of the recent progress in value and impact measurement over the last five years. Scenario planning exercises conducted by both ARL and SCONUL are used to analyse the likely future value proposition emerging for libraries. A values-based value scorecard is proposed, which would demonstrate the transcendent value of academic and research libraries now and in the future.
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