Scope and Scale. The necessary involvement of the practitioner limits the scope and scale of research. The ‘work-site’ approach affects the representativeness of the findings and the extend to which generalizations can be made on the basis of the results.
2.Control. The integration of research with practice limits the feasibility of exercising controls over factors of relevance to the research.
3.Ownership . Action research tends to involve an extra burden of work for the practitioners, particularly at the early stages before any benefits feedback into improve effectiveness.
4.Impatially . The action researcher is unlikely to be detached and impartial in his or her approach to the research. It is clearly geared to resolving problems which confront people in their routine, everyday activity, and these people therefore have a vested interest in the findings.