2 ideas from Edward L. Thorndike, each explained in a minute and credited to the original work. Free on Savvy.
Edward Thorndike found that when military officers rated soldiers on totally unrelated qualities — intelligence, leadership, physique — the scores were all suspiciously correlated.…
— Edward Thorndike, A Constant Error in Psychological Ratings
Edward Thorndike put hungry cats in boxes they could only escape by pulling a loop or lever. Their escape times fell over repeated trials not through sudden insight but blind trial…
— Edward L. Thorndike, Animal Intelligence: An Experimental Study of the Associative Processes in Animals