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studies. The difference in scoring rate between these two kinds of tests, with experienced and inexperienced subjects, was significant at odds of 1,000 to 1.
Tests with individual participants were much more successful than experiments with groups. Making the trials meaningful to each participant is important to success. The success level comparing individuals versus groups was statistically significant at 30 to 1 against chance.
We have always felt that feedback is one of the very helpful channels in all psi functioning. In precognition, we feel that it is the experience the viewer has when shown the feedback at a later time that is often the source of the precognitive experience. This view is strongly supported in the forced-choice studies, but it is true that studies by Gertrude Schmeidler at City College of New York showed precognition in forced-choice trials of computer-generated targets where the viewers did not receive any feedback. 13
Finally, the data show that the sooner the participants get their feedback, the greater the hit rate. That is, it appears that for forced-choice targets, it is easier to foretell the immediate future than the distant future. In laboratory experiments, people did very well in predicting events seconds or minutes in advance, but did less well looking hours or days in advance. This seems to be the case for naturally occurring precognition as well. On the other hand, it is also possible that people tend to forget dreams about the distant future before the events can be corroborated.
Thus, the four factors that are important in these studies are: (1) Practiced vs. inexperienced subjects, (2) Individual vs. group testing, (3) Feedback vs. no feedback, and (4) Short time interval between subject response and target generation. In the whole database of the Honorton-Ferrari analysis, there were some experiments that had all four favorable factors, and some that had all four unfavorable factors. After all is said and done, 87.5 percent of the psi-conducive studies were successful and significant, while none of the unfavorable studies were statistically significant. Since we now routinely carry out experiments under the favorable conditions, I think that we can say that we have learned quite a lot about psi in the past fifty years  if you do everything wrong, you'll definitely find no psi  which is,

 
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