Matching Information Requirements with Managerial Level Characteristics of Information Level of Time Source Scope Aggregation Horizons. External Very Wide External Future Top Man agement Middlle-evel Management Lower-level Management Largely Narrow Detailed Historical Interna Figure 20-5Matching Information Requirements with Managerial Level Characteristics of Information Source Scope Level of Aggregation Time Horizons ExternalVery Wide External Future Top Man￾agement Middle-level Management Lower-level Management Largely Internal Narrow Detailed Historical Figure 20-5