Haven't finished reading the paper yet, but it is not entirely obvious that when participants are being directed on how to choose, they are paying as much atten

Haven't finished reading the paper yet, but it is not entirely obvious that when participants are being directed on how to choose, they are paying as much attention as when they have to choose for themselves. That seems like a possible confound. And the GPS analogy also suggested itself to me. In fact, when the GPS gives me bad advice and I turn the wrong way, I seemed to have learned more from that too...