Gosh Ms. Schubert you have bitten off quite a large chunk of knowledge!

Here is a partial listing of things you might look at. There appear to be innumerable correlates of sustainability, perhaps this will provide a starting place (you are likely to know most of these already !) :

Bamberg, S. Effect of implementation intentions on the actual performance of new environmentally friendly behaviors-Results of two field experiments. J. Environ. Psychol. 2002, 22, 399–411.

Bechtel, R.; Corral-Verdugo, V. Happiness and sustainable behavior. In Psychological Approaches to Sustainability; Corral-Verdugo, V., Frías-Armenta, M., García-Cadena, C., Eds.; Nova Science Publishers: New York, NY, USA, 2010; pp. 433–450.

Brown, K.W.; Kasser, T. Are Psychological and Ecological Well-being Compatible? The role of values, mindfulness, and lifestyle. Soc. Indic. Res.2005, 3, 49–68.

Corral-Verdugo, V.; Frías-Armenta, M.; García-Cadena, C. Introduction to the psychological dimensions of sustainability. In, Psychological Approaches to Sustainability; Corral-Verdugo, V., Frías-Armenta, M., García-Cadena, C., Ed.; Nova Science Publishers: New York, NY, USA, 2010; pp. 3–18.

Corral-Verdugo, V.; Bonnes, M.; Tapia, C.; Fraijo, B.; Frías, M.; Carrus, G. Correlates of pro-sustainability orientation: The Affinity Towards Diversity. J. Environ. Psychol. 2009, 29, 34–43.

Corral-Verdugo, V.; García-Cadena, C.; Castro, L.; Viramontes, I.; Limones, R. Equity and sustainable lifestyles. In Psychological Approaches to Sustainability; Corral-Verdugo, V., Frías-Armenta, M., García-Cadena, C., Eds.; Nova Science Publishers: New York, NY, USA, 2010; pp. 185–204.

De Young, R. Some psychological aspects of a reduced consumption lifestyle: The role of intrinsic satisfaction and competence motivation. Environ. Behav. 1996, 28, 358–409.

Eisenberg, N.; Losoya, S.; Spinrad, T. Affect and prosocial responding. In Handbook of Affective Sciences; Davidson, R., Scherer, K., Goldsmith, H., Eds.; Oxford University Press: New York, NY, USA, 2003; pp. 787–803.

Gärling, T.; Fujii, S.; Gärling, A.; Jakobsson, C. Moderating effects of social value orientation on determinants of proenvironmental behavior intention. J. Environ. Psychol.2003, 23, 1–9.

Gatersleben, B.; Steg, L.; Vlek, C. Measurement and determinants of environmentally significant consumer behavior. Environ. Behav. 2002, 34, 335–362.

Geller, E.S. The challenge of increasing pro-environment behavior. In Handbook of Environmental Psychology; Bechtel, R., Churchman, A., Eds.; Wiley: New York, NY, USA, 2002; pp. 525–540.

Hsu, S.J. The effects of an environmental education program on responsible environmental behavior and associated environmental literacy variables in Taiwanese college students. J. Environ. Educ. 2004, 35, 37–48.

Iwata, O. Coping style and three psychological measures associated with environmentally responsible behavior. Soc. Behav. Personal. 2002, 30, 661–669.

Joireman, J.A.; Lasane, T.P.; Bennett, J.; Richards, D.; Solaimani, S. Integrating social value orientation and the consideration of future consequences within the extended norm activation model of proenvironmental behaviour. Brit. J. Soc. Psychol.2001, 40, 133–155.

Joreiman, J.A.; van Lange, P.A.; van Vugt, M. Who cares about the environmental impact of cars? Those with an eye toward the future. Environ. Behav. 2004, 36, 187–206.

Kaiser, F. A general measure of ecological behavior. J. Appl. Soc. Psychol.1998, 28, 195–220.

Kasser, T.; Ryan, R.M. Further examining the American dream: differential correlates of extrinsic and intrinsic goals. Pers. Soc. Psychol. B. 1996, 22, 280–287.

Lyubomirsky, S.; Lepper, S. A measure of subjective happiness: Preliminary reliability and construct validation. Soc. Indic. Res. 1999, 46,137–155.

Moser, G.; Ratiu, E.; de Vanssay, B. Relationships to water use and management in the light of sustainable development. IHDP Update 2004, 4, 13–15.

Nixon, H.; Saphores, J.; Ogunseitan, O.; Shapiro, A. Understanding preferences for recycling electronic waste in California. Environ. Behav. 2009, 41, 101–124. Sustainability 2013, 5 723

Pimentel, D.; Pimentel, M. Global environmental resources versus world population growth. Ecol. Econ. 2006, 59, 195–198.

Schultz, P.W. The structure of environmental concern. Concern for self, other people, and the biosphere. J. Environ. Psychol. 2001, 21, 327–339.

Tapia-Fonllem, C.; Corral-Verdugo, V., Fraijo-Sing, B.; Duron-Ramos, M.F. Assessing Sustainable Behavior and its Correlates: a Measure of Pro-Ecological, Frugal, Altruistic and Equitable Actions. Sustainability. 2013, 5(2), 711-723.

Thank you Alan this is great. I have already looked at the sustainability research in detail but what I have not found is a single measurement tool that might capture how sustainable a person is in their life. I have found the General Ecological Behaviour Scale (Kaiser, 2004, 2008) but I was just fishing to see if others knew other tools :-)

Does this mean you're looking for something measuring intention to maintain sustainable behavior over time? (Obviously I'm fishing here for your focus... ) do you know http://www.iisd.org/pdf/2009/measuring_knowledge_sd.pdf ? Alan

Have you contacted the Iinternational Institute for Sustainable Development - they are Canadian-based though I think have offices in Geneva and maybe the States. They may have what you need ? try http://www.iisd.org/about/

You are right. I wasn't very clear. I am looking for either a measure of behavioural intention or behaviour itself. Thanks for the iisd paper. That looks good.

The relationship between stated attitudes, intentions, etc. and actual behavior is weak.

I'm not sure if it'll fit your needs but an article of Milfontt & Duckitt (2010) called "The environmental attitudes inventory: A valid and reliable measure to assess

the structure of environmental attitudes" would be also helpfull.