How many letters does the top answer for “the psychological result of perception and learning and reasoning” have?

The most common answer is cognition (9 letters).

Crossword clue: the psychological result of perception and learning and reasoning

3 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

cognition 9 letters wn-def

the psychological result of perception and learning and reasoning

knowledge 9 letters wn-def

the psychological result of perception and learning and reasoning

noesis 6 letters wn-def

the psychological result of perception and learning and reasoning