Earlier quoted context omitted.
Maybe http://www.theskepticsguide.org/podcast/sgu/530 https://www.sgutranscripts.org/wiki/SGU_Episode_530 ?
hey, that's not bad; didn't even expect SGU had such detailed transcripts. But actually looking for it now, the particular study I had in mind seems to be from a science or fiction segment from this episode: http://media.libsyn.com/media/skepticsguide/skepticast2014-1... Interesting to see how Steve's assesment of modafinil evolved between the two episodes
Thank you so much for your time. I was really curious.