Interventionism in the social sciences involves giving significant money or resources to participants, developing relationships with participants outside of research, having participants co-design studies, explicitly acknowledging their help when publishing, etc. Fieldwork research involves collecting data in a natural or real-world setting rather than a controlled experiment. Fieldwork typically includes participant interviews, observations and surveys. Examples of fieldwork research include: interviewing prisoners, surveying victims in a post-natural disaster area, surveying political beliefs, etc.