Introduction: This paper discusses the person-in-environment framework, which proposes the inclusion of environmental factors, alongside personal factors, as the explanatory factors of individual-level information behaviour and outcome. Method: The paper first introduces the principles and schematic formulas of the person-in-environment framework. It then presents the findings of an empirical verification study. Analysis: A multi-way ANOVA test was conducted to verify the person-in-environment framework. The main and interaction effects of eight individual and information environment variables on individual academic performance were tested. Results: Four main effects (baseline academic grade, outcome expectation, home computer resources, and public library usage) and two interaction effects (home computer resources x public library usage; public library usage x neighbourhood public library resource level) were significant. Conclusions: The person-in-environment framework framework can help identify significant environmental interaction effects that would have been missed in studies that included only personal factors. [This paper was published in: "Proceedings of ISIC: The Behaviour Conference" (Leeds, England, Sep 2-5, 2014), Part 2, Paper isic19.]