Generation Effect
Self-Generation Effect
A phenomenon where information is better remembered if it is generated from one's own mind rather than simply read.
Origin
Cognitive psychologists Norman Slamecka and Peter Graf first documented the effect in their 1978 paper "The Generation Effect: Delineation of a Phenomenon" in the Journal of Experimental Psychology: Human Learning and Memory. Across five experiments, participants who completed word stems (e.g., "hot → c___") consistently remembered more than those who simply read the completed pairs. The finding held across cued recall, free recall, and recognition memory tasks, establishing one of the most robust effects in memory research.
Everyday Use
Quizzing yourself on flashcards works better than re-reading your notes — because the act of generating the answer from memory strengthens the memory itself. It's why teaching someone else a concept helps you remember it, and why fill-in-the-blank exercises beat passive highlighting.