Well, speaking about coin tosses, if anyone wants to try this, if you balance pennies on their edges, and jar the table, they are more likely to turn up heads due to the fact that the angles are not 90 degrees at the edges [ p(heads) converges on 1.0 with newly minted pennies]. If you SPIN them, the bias is towards tails. I talked with a physicist years ago and I believe it had to had to do with centrifugal forces (??). I may have heads/tails reversed. But these make neat NHST demonstrations if you want to start with null hypothesis = .50.
========================== John W. Kulig, Ph.D. Professor of Psychology Coordinator, University Honors Plymouth State University Plymouth NH 03264 ========================== ----- Original Message ----- From: "Marie Helweg-Larsen" <helw...@dickinson.edu> To: "Teaching in the Psychological Sciences (TIPS)" <tips@fsulist.frostburg.edu> Sent: Wednesday, October 26, 2011 11:01:06 AM Subject: RE: [tips] JEP: The hot hand exists in volleyball Coin tosses are not necessarily random. You just have to get a machine to throw it with accuracy (the kind of accuracy that is difficult for people to achieve). http://www.npr.org/templates/story/story.php?storyId=1697475 I also do not see any evidence (based on the abstract) for whether there is a hot hand in volley ball. The article focuses on people's beliefs about the hot hand (which is quite strong). Marie **************************************************** Marie Helweg-Larsen, Ph.D. Associate Professor of Psychology, Dickinson College Kaufman 168, Phone 717 245-1562 Office hours: Tuesday and Wednesday 2:00-3:30 http://users.dickinson.edu/~helwegm/index.html **************************************************** -----Original Message----- From: Brandon, Paul K [mailto:paul.bran...@mnsu.edu] Sent: Wednesday, October 26, 2011 10:25 AM To: Teaching in the Psychological Sciences (TIPS) Subject: Re: [tips] JEP: The hot hand exists in volleyball Perci Diaconnis was reputed to be able to control manual coin tosses. On Oct 26, 2011, at 7:25 AM, John Kulig wrote: I like Stephen's artillery analogy. My point was even simpler, that we cannot rule out the possibility of a hot-hand on a priori grounds by assuming independence between successive shots the way that successive coin tosses are (tossed from a mechanical tosser; there MAY be ways to bias a human's coin toss); hence if an empirical demonstration is found, we wouldn't say "impossible" the way we would with coin tosses. --- You are currently subscribed to tips as: helw...@dickinson.edu. To unsubscribe click here: http://fsulist.frostburg.edu/u?id=13234.b0e864a6eccfc779c8119f5a4468797f&n=T&l=tips&o=13677 or send a blank email to leave-13677-13234.b0e864a6eccfc779c8119f5a44687...@fsulist.frostburg.edu --- You are currently subscribed to tips as: ku...@mail.plymouth.edu. To unsubscribe click here: http://fsulist.frostburg.edu/u?id=13338.f659d005276678c0696b7f6beda66454&n=T&l=tips&o=13681 or send a blank email to leave-13681-13338.f659d005276678c0696b7f6beda66...@fsulist.frostburg.edu --- You are currently subscribed to tips as: arch...@jab.org. To unsubscribe click here: http://fsulist.frostburg.edu/u?id=13090.68da6e6e5325aa33287ff385b70df5d5&n=T&l=tips&o=13686 or send a blank email to leave-13686-13090.68da6e6e5325aa33287ff385b70df...@fsulist.frostburg.edu
