Detailed information on Pew Research Center international survey methodology, such as mode of interview, sampling design, margin of error, and design effect, for each country we survey, organized by ...

Collectively, recreational fisheries can take a significant fraction of the yearly catch—in some cases more than commercial fisheries. It is important that systems used to monitor fishing catch are ...

Collectively, recreational fisheries can take a significant fraction of the yearly catch—in some cases more than commercial fisheries. It is important that systems used to monitor fishing catch are ...

Information on habitat associations from survey data, combined with spatial modelling, allow the development of more refined species distribution modelling which may identify areas of high ...

Applying causal inference methods, such as weighting and matching methods, to a survey sampled population requires properly incorporating the survey weights and design to obtain effect estimates that ...

Survey researchers design or conduct surveys and analyze survey data. Many groups use surveys to collect factual data, such as employment and salary information, or to ask questions that help them ...

Researchers are working to identify less error-prone methods for performing wildlife surveys. Research led by a University of Montana undergraduate student to identify less error-prone methods for ...

Amphibian biodiversity is declining worldwide and collecting information about their habitats and populations via monitoring is vital for conservation efforts. However, it is difficult to accurately ...