Understanding complex systems such as developing embryos requires quantitative approaches. Mathematical models of developmental processes have provided insight into mechanisms and suggested new ...

Quantitative trait locus (QTL) mapping is often conducted in line-crossing experiments where a sample of individuals is randomly selected from a pool of all potential progeny. QTLs detected from such ...

Business owners faced with tough decisions can use one or both of two general approaches to problem solving. The qualitative approach draws on a manager's experience and expertise, which together hone ...

Eventually, it’s going to recommend a quantitative approach. Likewise, a "numbers person" will be recommended a qualitative approach from time to time—flip around the example above, and there’s a ...

A behind-the-scenes blog about research methods at Pew Research Center. For our latest findings, visit pewresearch.org. (Related post: How focus groups informed our study about nationalism and ...