In 1973, Harriet Williams published in "Quest" on volunteer bias (self-selection bias) in kinesiology research. Williams' evidence-based commentary included a discussion on sex differences in volunteerism. More recently, some exercise and sports scientists (ESS) have suggested "investigator" bias explains the lower proportion…

Descriptive analyses of socially important or theoretically interesting phenomena and trends are a vital component of research in the behavioral, social, economic, and health sciences. Such analyses yield reliable results when using representative individual participant data (IPD) from studies with complex survey designs, including educational…

Whilst there is no doubt that fieldwork research involving active criminals contains risks and dangers, this is not always the case. Drawing on interviews conducted with illegal tiger skin suppliers and traders in Lhasa (Tibet), this article challenges orthodox understandings of criminological fieldwork. My experience in Lhasa speaks to three…

Peer nominations are used widely in psychological and sociological research to examine intergroup dynamics, even though this assessment tool suffers from thorny methodological problems: Gender, ethnic, age, and trait compositions vary across subsamples, subjects differ in the number of nominations they make, and the issue of sampling without…

Many organized out-of-school-time (OST) activities provide enriching opportunities for children to interact with peers, build cognitive skills, develop relationships with mentors, and explore a variety of talents and leisure pursuits. A growing set of findings suggests that youth participation in OST activities is associated with academic…