12 letters · 22 points in Scrabble
noun an approach to psychology that emphasizes observable measurable behavior
originEtymology tree English behaviour Proto-Indo-European *-id- Proto-Indo-European *-yéti Proto-Indo-European *-idyéti Proto-Hellenic *-íďďō Ancient Greek -ῐ́ζω (-ĭ́zō) Proto-Indo-European *-mos Proto-Indo-European *-mós Ancient Greek -μός (-mós) Ancient Greek -ισμός (-ismós)der. English -ism English behaviourism From behaviour + -ism.
Etymology from Wiktionary, CC BY-SA 3.0