Hi Interesting article, although I need to think more about it. One obvious weakness is the old canard about effect size being a better indicator of importance than p value. The author uses the example of a divorce rate change being tiny: "meeting online nudged the divorce rate from 7.67% down to 5.96%." One source indicates that there are about 2,000,000 marriages in the USA per year. 7.67% is 153,400 divorces, 5.96% is 119,200 divorces, for a reduction of 34,200 divorces or 22.3% fewer divorces every year. Not exactly what I would call a "tiny" difference.
Take care Jim Jim Clark Professor & Chair of Psychology 204-786-9757 4L41A -----Original Message----- From: Christopher Green [mailto:[email protected]] Sent: Wednesday, February 12, 2014 4:43 PM To: Teaching in the Psychological Sciences (TIPS) Subject: [tips] Scientific method: Statistical errors : Nature News & Comment An interesting article about the problems of p-values that might even be understandable to undergraduates. http://www.nature.com/news/scientific-method-statistical-errors-1.14700 Chris ....... Christopher D Green Department of Psychology York University Toronto, ON M6C 1G4 [email protected] http://www.yorku.ca/christo --- You are currently subscribed to tips as: [email protected]. To unsubscribe click here: http://fsulist.frostburg.edu/u?id=13251.645f86b5cec4da0a56ffea7a891720c9&n=T&l=tips&o=34162 or send a blank email to leave-34162-13251.645f86b5cec4da0a56ffea7a89172...@fsulist.frostburg.edu --- You are currently subscribed to tips as: [email protected]. To unsubscribe click here: http://fsulist.frostburg.edu/u?id=13090.68da6e6e5325aa33287ff385b70df5d5&n=T&l=tips&o=34164 or send a blank email to leave-34164-13090.68da6e6e5325aa33287ff385b70df...@fsulist.frostburg.edu
