Often one CFA member is responsible for developing a quantitative analytical model while other members may use the model to make recommendations to clients. Would the level of diligence required in testing the functioning of such a model differ for a member responsible for the development versus a member using the model to advise clients?

The level of diligence in testing the model would be equal for both the developer and the user.

The user would need to exhibit a greater level of diligence because he or she is ultimately engaged with the client.

The developer would need to exhibit a greater level of diligence because he or she would understand the technical nature of the model.