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 ...

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 ...

Survey methods are used to collect informative data in a wide range of scientific contexts. This Comment outlines how to ensure that a survey is fit for its intended purpose and to avoid the many ...

Polls ahead of June 3 local elections showed that results could vary sharply across polling firms, even when the same ...

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 ...