HVM employs on and off-line surveys to gain verifying data for fieldwork. It allows for a widespread sample to be engaged and gives respondents time to consider their answers, refer to records or consult with others which will be useful within the overarching study objectives. Surveys are often used as a way of gaining a range of views on a subject to inform the design of additional fieldwork such as public dialogue, focus groups or community mapping. HVM also employs nationally representative surveys to validate the findings of a major qualitative study as recent work for the Royal Society demonstrates.