In today's society, there is increasing pressure placed on forests to provide multiple forest outputs. Forestry organizations have responded by promoting identification and valuation of these outputs for trade-off, criteria and indicators, or other analyses. However, in the process of conducting such analyses, many forest outputs are dropped at the evaluation stage owing to a stated lack of available and reliable data. In an effort to help increase our understanding of the value of multiple forest outputs and trade-offs, I have been refining and applying a number of socio-economic measurement tools. In this article, I provide an overview of my (and my students') research activities and contributions to this growing area of research. Key words: non-market valuation, market valuation, forest value trade-offs, criteria and indicators