Finally, the role behaviours of a leader are intended to directly influence followers' attitudes and behaviour within the group or organizational context. Thus the direct measures of effectiveness should be based on the degree to which a leader promotes (a) instrumental attitudes and behaviours for the achievement of group objectives, (b) followers' satisfaction with the task and context within which they operate, and (c) acceptance of the leader's influence which is often manifested through the followers' emotional bond with the leader, attributions of favorable qualities to the leader, and compliance behaviour. Instead, more often leadership effectiveness is measured in terms of aggregate group or organizational productivity, such as sales increase, profit margin, cost per unit, overall group performance, etc. Such group or organizational productivity measures can truly reflect a leader's effectiveness only when followers' instrumental attitudes and behaviours have a one-to-one relationship with the aggregate productivity measures. But this is hardly the case in most organizations, Very often, indices of group or organization level productivity depend not only on followers' instrumental attitudes, values and behaviour, but also on available environmental resources, technology, market condition, etc. over which a leader has little control. Therefore, aggregate productivity indices are not always appropriate measures of a leader's influence.