On Sat, 9 Jun 2012 19:54:21 +0000, Paul C Bernhardt wrote: >Do we know exactly when Bem did the studies that were published >in JPSP? > >If he'd been doing studies for decades he could eventually have gathered >enough type 1 errors to result in the publication we saw in JPSP.
I have spent only a little bit of time looking at this issue but here is what I found. Bem (2011) acknowledges in a footnote that some of the research was done before 2003. Quoting from his article for Exp 5: |4 This experiment was our first psi study and served as a pilot for the |basic procedures adopted in all the other studies reported in this article. |When it was conducted, I had not yet introduced the hardware-based |random number generator or the stimulus seeking scale. Preliminary results |were reported at the 2003 convention of the Parapsychological Convention i|n Vancouver, Canada (Bem, 2003); subsequent results and analyses have |revised some of the conclusions presented there. (p9) The Parapsychological Association which sponsors the convention mentioned above has a website and it provides some of the abstracts for certain years; see: http://www.parapsych.org/section/24/convention_abstracts.aspx I did a superficial examination of the experiments reported in Bem (2011) and those Bem reported at the Parapsychological Association convention. Here is the list: NOTE: Matching on number of subjects used in the experiment was done because the presentations were written somewhat differently from the description provided in Bem (2011). Bem presented several experiments in 2008 under the title "Feeling the Future III" which implies that there may be a "Feeling the Future 1" and Feeling the Future 2" somewhere. Not all of the convention proceedings are available (e.g., 2003 is not). (1) Exp 1: Precognitive Detection of Erotic Stimuli Subjects: 100 Cornell UG, 50 women & 50 men Date Unknown (2) Exp 2: Precognitive Avoidance of Negative Stimuli Subjects 150 Cornell UG, 107 women & 43 men Also Exp 1 in 2008 Feeling the Future III. NOTE: Although Bem mentions that Exp 5 comes from Bem (2003) he does not acknowledge that Exp 2 & 3 are from his 2008 presentation. The proceedings with Bem's paper is available on the Association's website. A third experiment is presented in 2008 but it does not appear to one of those in Bem (2011). (3) Exp 3: Retroactive Priming Subjects: 100 Cornell UG, 69 women & 31 men Also Exp 2 in 2008 Feeling the Future III (4) Exp 4: Retroactive Priming II Subjects: 100 Cornell UG, 57 women & 43 men Date Unknown (5) Exp 5: Retroactive Habituation I Subjects: 100 Cornell UG, 63 women & 37 men Also Bem, D. J. (2003, August). Precognitive habituation: Replicable evidence for a process of anomalous cognition. Paper presented at the meeting of the Parapsychological Association, Vancouver, British Columbia, Canada. (6) Exp 6: Retroactive Habituation II Subjects: 150 Cornell UG, 87 women & 63 men NOTE: Bem reports Savva, Child, & Smith (2004) replicated study (7) Exp 7: Retroactive induction of Boredom Subjects: 200 Cornell UG, 140 women & 60 men Date Unknown (8) Exp 8: Retroactive Facilitation of Recall I Subjects: 100 Cornell UG, 64 women & 36 men Date Unknown (9) Exp 9: Retroactive Facilitation of Recall II Subjects: 50 Cornell UG, 34 women & 16 men Date Unknown Perhaps a closer reading of Bem (2011) would provide more information about the studies listed above with "date unknown". I believe that Bem has also published in some of the journals in this area, such as "The Journal of Parapsychology" and "Journal of Scientific Exploration", which might provide additional info but both require membership in their societies to get full access to their publications. Perhaps some enterprising graduate student/junior faculty will take the bait, er, challenge. So, in summary, some of Bem's (2011) research ranges back to before 2003 and as recent as 2008; there may be some research between 2008 and the acceptance of his manuscript for publication. I would love to write more on this topic but friends keep telling me that I need to read a book about 50 shades of gray. I think its a book about perception. ;-) -Mike Palij New York University [email protected] --- 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=18315 or send a blank email to leave-18315-13090.68da6e6e5325aa33287ff385b70df...@fsulist.frostburg.edu
