Bronfenbrenner’s bioecological model of human development offers several insights to environment and behaviour researchers. Several empirical presentations will stimulate an interactive discussion among the presenters and the audience about various ways in which Bronfenbrenner’s perspective can be helpful to us. Some of the issues to emerge in our discussion follow. Environments are contexts that have multiple, embedded layers that vary in their proximity to the person. This ecological perspective emphasizes the salience of proximity and duration of exposure. The energy that drives human development mainly comes from the reciprocal transactions between persons and the places they directly experience over the longest periods of time. The physical, social, and symbolic elements of these microsystems are critical to understanding behaviour. However Bronfenbrenner reminds us that we move across settings and their influences persist spatially and temporally. What happens at work or school can be directly affected and moderated by conditions of home, neighbourhood, or commuting as well as by the larger sociocultural context in which they function (e.g., culture, SES). Isolating exposure to particular characteristics within a single setting may distort our understanding of transactions between the person and the environment. We actively interpret the multilevel, embedded contexts in which we live. Physical and social cues within and across settings are filtered through the lens of consciousness. We need to understand how social and physical characteristics of context in conjunction with personal knowledge, history, and biology are constructed in order to make sense of environment and behavior. Human behavior unfolds not only across places but over time as well. The continuity, duration, and predictability of environmental experiences may be just as important as the level or quality of the social and physical features of the settings we inhabit.