Cover -- Preface -- Figures -- Summary -- Acknowledgments -- Abbreviations and Acronyms -- Chapter One - Introduction -- About This Study -- About This Report -- Chapter Two - What is Organizational Learning? -- Organizational Learning as a Four-Part Process -- The Need to Combine Explicit and Tacit Knowledge -- Different Forms of Organizational Learning -- Chapter Three - The Need to Learn in Order to Change Effectively -- Development, Improvement, and Employmentof New Weapons or Tactics -- Improving Skills with Current Weapons or Tactics -- Collecting and Utilizing Intelligence Information -- Thwarting Efforts to Combat Terrorist Activities -- Preserving Organizational Capabilities Despite the Lossof Group Members -- Chapter Four - How Understanding Terrorist Group Learning Can Aid in Combating Terrorism -- Detecting Terrorist Groups' Efforts to Change -- Anticipating the Outcome of Terrorist Groups' Efforts to Change -- Acting More Effectively to Thwart Terrorist Efforts -- Chapter Five - Limitations of an Organizational-Learning-Based Approach for Analysis and Operational Planning in Combating Terrorism -- The Need to Understand Terrorist Group Structureand Membership -- Lack of Data on Terrorist Group Learning Processes -- The Nature of Learning Models -- Difficulties in Measuring the Results of Learning -- Understanding the Contribution of Learning Ability toSpecific Terrorist Operations -- Chapter Six - Conclusions -- Assessing the Threat Posed by Individual Terrorist Groupsand Understanding Their Behavior -- Developing and Implementing Effective Counterstrategies -- Allocating Resources and Developing Metrics to Assessthe Effectiveness of Efforts to Combat Terrorism -- Concluding Remarks -- Appendix - Overview of the Case Study Groups -- References.