Richard Harris' "Why Are More Baby Boys Born Than Girls?" on May 18, 2015 best practices in research methods biology causality developmental psychology discussion prompt NPR research methods scientific method +
National Geographic's "Are you typical?" on May 15, 2015 median mode multiculturalism National Geographic nominal variables video +
Healey's "Study finds a disputed Shakespeare play bears the master's mark" on May 11, 2015 content analysis Shakespear +