I need more ideas about the justification below to explain why by using heads of departments as respondents can reflect the innovation in organizations in general. With note that the study purpose is to examine the relationship between HRM practices, (knowledge sharing as mediating) on service innovation ( hotels are the case).
I have give justification as following: in order to collect information about the innovation in the whole hotel, it has been assumed that only the heads of departments are supposed to have the most relevant information about the innovation in their departments as the head of innovation. In addition, the head of each department considers the better position to simply discover and provide the right and precise information on the impact of HRM practices and knowledge, sharing on departments’ innovation. Thus, collecting information from all departments in the hotels may can reflect the level of innovation in the whole hotel.