"Environmental problems are a result of maladaptive human behaviour. One way to tackle these problems is to foster values that underlie environmental attitudes and behaviours. Research has shown that certain values (e. g., self-transcendence values like social justice and world of peace) are positively correlated to environmental engagement, so fostering these values might foster environmental action. Values research has used the value self-confrontation technique (e.g., Maio, Pakizeh, Cheung, & Rees, 2009; Rokeach, 1973) to manipulate value change. In the typical use of this paradigm, individuals receive feedback emphasizing a "deficiency" in the extent to which they possess a specific set of values compared to a referent group. The perceived inconsistence between one's values and the values held by the referent group lead to an increase in importance attributed to the "deficient" values. That is, the self-confrontation technique lead to a change in values, and can be used to impact environmental behavioural intentions and actual behaviour. The present research aims to evaluate how values can be experimentally manipulated to change people's behavioural intentions towards the environment. Two experiments are planned. Experiment 1 aims to expand on a study by Maio et al. (2009, Study 1). These authors used the value self-confrontation technique to manipulate value change in a laboratory setting. For experiment 1 we replicated their study using a survey design with a sample of 138 participants from the general population (instead of undergraduate students) to check if a different method of data collection and different population will produce similar results, and whether the value manipulation will have the expected effect on environmental behavioural intentions. Because participants completed pre- and post-measures in a single assessment, a critic of Maio et al. (2009, Study 1) and our experiment 1 is that participants might become aware of the desired manipulation (i.e., the issue of experimental transparency). Experiment 2 overcomes this possible limitation by having the pre- and post-measures weeks apart. A total of 186 university students from Victoria University of Wellington took part in this experiment. For both experiments participants answered a set of critical measures: a modified version of the General Ecological Behaviour (GEB) scale, values list from the Schwartz Value Survey, a group identification measure, and three filler questionnaires. This talk will report the findings of these experiments for the first time. Studying changes on values and how it affects environmental behavioural intentions offers insights into more effective techniques that could be used to encourage people to live in a more sustainable manner. The findings from my research may offer a more effective solution to current behaviour change programmes that rely a "