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Chaining is an instructional procedure used in behavioral psychology, experimental analysis of behavior and applied behavior analysis. It involves reinforcing individual responses occurring in a sequence to form a complex behavior.haining is an instructional procedure used in behavioral psychology, experimental analysis of behavior and applied behavior analysis. It involves reinforcing individual responses occurring in a sequence to form a complex behavior.
Sympathetic chain is each of the pair of ganglionated longitudinal cords of the sympathetic nervous system, situated on either side of the vertebral column.ympathetic chain is each of the pair of ganglionated longitudinal cords of the sympathetic nervous system, situated on either side of the vertebral column.