Andreu opens with the Rosenthal and Jacobson experiment: students labelled top performers outscored the rest a year later, even though the groups were picked at random. He pulls out the four teacher behaviours behind it, a warmer climate, more and deeper content, more chances to respond, and constructive feedback, and names the reverse, the Golem effect. His closing dilemma: how far can you shape players without overriding their free will? Watch the full masterclass: The Pygmalion effect.
