A number of psychological techniques of self-control have also been suggested. Which of them are from the following: a) Observation of own behavior b) Self-instruction c) Self-reinforcement d) Self-concept

a, c, d a, b, c a and b b and d

a, b, c

A number of psychological techniques of self-control have also been suggested : a) Observation of own behavior b) Self-instruction c) Self-reinforcement