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Scrabble US/Canada (OTCWL) Yes (9 Points)
Scrabble UK (SOWPODS) Yes (9 Points)
Words With Friends Yes (11 Points)

Operant Definition

(adjective)
definitions

involving the modification of behaviour by the reinforcing or inhibiting effect of its own consequences


(noun)
definitions

an item of behaviour that is not a response to a prior stimulus but something which is initially spontaneous, which may reinforce or inhibit recurrence of that behaviour


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