A quote: "There seems to be a simple way to instantly increase a person’s level of general knowledge. Psychologists ..."
Ahh. Psychologists. Expectations calibrated.
"Expecting to know the answers made people more likely to get the answers right."
Ah, yes -- that conclusion should be easy to rigorously quantify, explain in neuroscientific terms, turn into a general theory, and replicate before anyone assumes we're doing actual science. But no one will shape a theory, there will be no replications, and this study, like 99% of psychology studies, will disappear without a trace, only to be inadvertently repeated years from now by someone who will arrive at the opposite conclusion.
Ahh. Psychologists. Expectations calibrated.
"Expecting to know the answers made people more likely to get the answers right."
Ah, yes -- that conclusion should be easy to rigorously quantify, explain in neuroscientific terms, turn into a general theory, and replicate before anyone assumes we're doing actual science. But no one will shape a theory, there will be no replications, and this study, like 99% of psychology studies, will disappear without a trace, only to be inadvertently repeated years from now by someone who will arrive at the opposite conclusion.