Research was conducted to explore the level of evidence of impact collected through program evaluation (outcome studies) by Extension as published in JOE. Articles reviewed were those listed under the headings of "Feature Articles" and "Research in Brief" in 5-year increments (1965-69, 1975-79, 1985-89, 1995-99, and 2005-09). The design used a form of quantitative content analysis. The data indicate that 88.5% of the articles documented evidence above the level of participation and that almost two-thirds were measuring outcomes; however, only 5.6% documented long-term outcomes. The findings have implications for improving Extension's public value through documented evidence of impact.

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