No one has ever disclosed this info, except for PD. She had suspicious papers and suspicious data in a PS paper, so she was being "monitored", let's say. But yes, she basically took the surveys herself in the lab (probably so the IP numbers come from inside the university lab). It's a pretty dumb move considering there's also timestamps that can be verified in the data.
Does anyone know exactly what sorts of data anomalies were in papers by Ping Dong and/or Nicole Coleman? In Lawrence Sanna's case, I read that the means and standard deviations were pretty much identical across conditions, indicative of copying and pasting with minor changes (read: fabrication) of data to make it look somewhat different. In other fields, people have been caught copying cells directly without any changes. How were Ping and Nicole caught and what were the data anomalies? Anyone know? Insider?