Environmental public goods

Public goods are non-rival (they cannot be exhausted) and non-excludable (there are no boundaries). An environmental example in the Contracts2.0 context is an open and beautiful landscape which can be enjoyed by one person without compromising someone else’s use and for which it is difficult to exclude someone from enjoying it. Environmental public goods are typically underprovided by markets. 

See also: Public good

Environmental services

are the services that humans render to each other to maintain or increase certain ecosystem services (Karsenty, 2013). Environmental services are a sub-group of ecosystem services that are characterised by externalities (FAO, 2007).

See also: Ecosystem services (ES)

References

FAO (Food and Agriculture Organization of the United Nations), 2007. The State of Food and Agriculture (SOFA). Paying farmers for Environmental Services. FAO Agriculture Series No. 38.
Karsenty A., 2013. On the Nature of Payments for Environmental Services (PES). Revue du MAUSS, 42: 261-270. DOI: 10.3917/rdm.042.0261

Experimental economics

subfield of economics that uses experimental methods/economic experiments to study individual and collective decision-making. By giving the researcher freedom to manipulate factors of interest, difficulties to establish causal relationships (typically present in observational data) can be overcome. Yet, the method relies on strong simplifications and abstraction.

A common feature of economic experiments is the use of monetary incentives contingent on behavior/choices in the experiment (as opposed to most psychological experiments).

Externalities

costs or benefits which have a (negative or positive) effect on a third party which did not choose to be affected.

Extrinsic motivations

Extrinsic motivation involves engaging in a behavior in order to earn external rewards or avoid punishment.

See also: Intrinsic motivations