The psychology of parapsychology, or why good researchers publishing good articles in good journals can still get it totally wrong

Unless you’ve been pleasantly napping under a rock for the last couple of months, there’s a good chance you’ve heard about a forthcoming article in the Journal of Personality and Social Psychology (JPSP) purporting to provide strong evidence for the existence of some ESP-like phenomenon. (If you’ve been napping, see here, here, here, here, here, … Continue reading The psychology of parapsychology, or why good researchers publishing good articles in good journals can still get it totally wrong

the capricious nature of p < .05, or why data peeking is evil

There’s a time-honored tradition in the social sciences–or at least psychology–that goes something like this. You decide on some provisional number of subjects you’d like to run in your study; usually it’s a nice round number like twenty or sixty, or some number that just happens to coincide with the sample size of the last … Continue reading the capricious nature of p < .05, or why data peeking is evil