Professor Flores works on the development and refinement of methodologies for eliciting environmental preferences. Much of Professor Flores' work involves the application of economic theory to help understand elicitation methods and empirical phenomena.

Examples of completed projects include an analysis of how multiple public goods interact in determining monetary values for changes in these goods; a theoretical examination of non use values for environmental goods; a theoretical examination of the relationship between income and environmental values; an assessment of the welfare-signaling capabilities of environmentally-adjusted national income accounts; an examination of the relevance of altruism in benefit cost analysis; and an empirical investigation of the importance of provision mechanisms in the application of the contingent valuation method.