Given the shortfalls of the evaluative literature associated with the success of early OD applications, has it been possible to move beyond those unsatisfactory tethers like those above? Four major points will be required to suggest the how’s and why’s of progress that has been made. In sum, the following text should provide energy to adopt an optimistic view of maturing OD applications. Consider these questions:
• What changes have been made to enhance the usefulness of collections of OD applications in evaluative research on OD applications?
• What major improvements have been made, methodologically?
• What major improvements have been made in the choice of variables in comprehensive measures of the effects of ...