incentive human 10 article 9 United States 6 adult 5 female 5 male 5 Humans 4 controlled study 4 governance approach 4 human experiment 3 motivation 3 semi structured interview 3 Adult 2 Article 2 Indonesia 2 Motivation 2 New York [New York (STT)] 2 New York [United States] 2 climate change 2 cognition 2 conservation 2 crowdsourcing 2 decision making 2 financial market 2 financial system 2 game theory 2 human cell 2 independent variable 2 major clinical study 2