In common with MM, the BM study also focuses on the role of individual-level perceptions in establishing the critical connection between theoretical organizational-level attributes (structure, information system content), information attributes (scope, internal/external, time horizon), and events (information use). For example, the desire of managers to obtain timely, accurate, and idiosyncratic data influences their preference for personal sources and achoo systems. BM point out that such behavior has clear implications for the design of management information systems, for example, in legitimately excluding data readily available by other means. They also provide insight into the duration of causal intervals (in which preferences shift from count data to financial data). These social attributes of theory-defined variables are difficult to document in surveys and difficult to generalize from individual case studies.