???? ????? ?? ??? ?? ???? ???? ????? ?? ?? ?? ???? ????? ??? ??? ??????, ?? ???? ???? ?? ????? ?????? ???? ?????? ????? ?? ?? ?? ?????? ?? ??? ???? ?? ??? ??, ?? ?????????? ?? ???? ???.The motivational program is effective largely by a reward–punishment mechanism. When a certain actions is followed by favorable effects, the reward mechanism durin… Read More