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John Thomas Grinder, Jr. (/ˈɡrɪndər/ GRIN-dər; born January 10, 1940) is an American linguist, author, management consultant, trainer and speaker. Grinder is credited with co-creating Neuro-linguistic programming, with Richard Bandler. He is co-director of Quantum Leap Inc., a management consulting firm founded by his partner in 1987 (Grinder joined in 1989). Grinder and Bostic St. Clair also run workshops and seminars on NLP internationally.