Published by Elsevier in collaboration with the Association for Project Management (APM) and the International Project Management Association (IPMA)The International Journal of Project Management is the leading journal for the field of project management and organization studies. Its mission is to publish leading edge innovative research that significantly advances the field of project management and organizing. Published eight times a year it presents new knowledge on areas such as managing projects, programs and portfolios, project-based/oriented organizations, project networks, and project-oriented societies. It is dedicated to project management and organizing from the perspectives of organizational behavior, strategy, change, and innovation. Methodologically, IJPM covers the full range of empirically-based modes of enquiry using appropriate research frameworks, provided they demonstrate generic insights of significant value to project management. IJPM does not categorically exclude certain empirical methodologies, except however purely mathematical modeling or operations research pieces. Irrespective of the mode of enquiry or methods used, the key methodological issues in new submissions are: appropriateness of methodology to the research task, clarity in how the study has been carried out, rigor in the application of the methods, and consideration of relevant validity issues. Papers are also expected to explicitly build on current debates in recent literature and to contribute to theory. Occasionally IJPM publishes conceptual papers which fulfill a high-quality standard.