The attitudinal approach may be the best approach to handle employees-manager conflicts, because it focuses on the process by which people come to think about their relationships with the organization (relationship between the employees and the management or relationship between employees with each other).

Yes, this approach can increase commitment, because studying the employee-manager relationship and knowing what each party think about the other can help analyze the weaknesses in the relationship that help develop ways to make a better and a stronger relationship between both parties, which in turn helps develop a stronger organizational commitment.