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This paper studies how the concepts of efficiency, effectiveness and efficacy are used in project management literature. The concepts relate to the degree of success or failure of projects and the degree to which the results are achieved. The purpose of this paper is to review the use of the concepts of efficiency, efficacy and effectiveness in project management literature and among practitioners.

The study is based on an extensive literature review, initially from the International Journal of Managing Projects in Business. The first phase involved searching the words “efficiency”, “effectiveness” and “efficacy” in all articles of the journal, and then quantifying the results. This was followed by a qualitative search of the same articles with the aim of understanding how the terms “project efficiency”, “project efficacy” and “project effectiveness” are used. A further intensive literature review was then conducted in other literatures in the field of project management, including, but not limited to, International Journal of Project Management and Project Management Journal. Finally, the authors complemented the review by including theories from deep searches of Google Scholar and Google Books using the parameters “project efficiency”, “project effectiveness” and “project efficacy” and checked how the three concepts are used in other fields.

This research reveals there is wide diversity in interpretations of the three concepts among research scholars and practitioners, which makes it challenging to apply these three concepts appropriately and clearly. As a consequence, the authors propose a model for describing these concepts.

This research is based on an academic and non-academic literature review. It identifies a number of inconsistencies in existing literature regarding the three concepts.

This review enriches understanding of project management. Clarifying the understanding of project efficiency, project effectiveness and project efficacy will help and support organisational improvement. A clear and aligned view of these concepts can also be a basis for measurements based on possible developed indicators.

This paper highlights the gap in the literature concerning the practical use and interpretation of the concepts “project efficiency”, “project effectiveness” and “project efficacy”.

The increasingly uncertain and unstable factors in the internal and external environments of megaprojects lead to more potential crises and challenges, hence increasing the importance of improving organizational resilience. This study aimed to explore the effects of transformational leadership and employee self-efficacy on organizational resilience from a leader–employee perspective.

By combining the perspectives of leaders and employees, this study constructed a development mechanism of the organizational resilience of megaprojects. Organizational climate and organizational learning were selected as two organizational resources to study the mediating roles of leaders and employees. A partial least-squares structural equation model was used to test the hypotheses based on data collected from 243 respondents.

Results show that transformational leadership and employee self-efficacy positively affect organizational resilience and organizational resources. Organizational learning positively mediates the effects of leader–employee factors on organizational resilience, whereas organizational climate does not.

This study verifies the positive role of transformational leadership and employee self-efficacy in organizational resilience and reveals the development mechanism of using organizational resources to build organizational resilience. This paper enlightens project managers and employees on how to well respond to the uncertainty and complexity of megaprojects.

While existing literature emphasizes the importance of empowerment in construction projects, the working mechanisms of empowering leadership in the project context are unclear. Based on conservation of resources (COR) theory, this study aimed to examine the relationship between empowering leadership and project performance, highlighting the mediation roles of creative self-efficacy and leadermember exchange and the moderation role of perceived overqualification.

The authors collected data from 287 project members in different projects and tested the integrated conceptual model through moderated mediation analysis with bootstrapping strategy.

The results revealed that empowering leadership was positively related to project performance through creative self-efficacy and leader–member exchange. Perceived overqualification served as significant moderator.

The findings contribute to the understanding of empowering leadership in projects by verifying and extending the resource acquisition and investment process in the project context. The results of this study also demonstrated that creative belief and social exchange facilitate the effectiveness of project members' task efforts and outcomes and that perceived overqualification might not exert a detrimental effect on project performance.

Infrastructure projects are pivotal for regional economic development, but also face low project effectiveness. Leadership is always regarded as a key enabler for project team effectiveness, including vertical leadership and team-level leadership. The purpose of this paper is to examine how vertical leadership facilitates shared leadership in infrastructure project teams.

This paper develops the conceptual model based on the literature review. Then the questionnaire survey was conducted. The empirical data obtained from 117 infrastructure project teams in China were analyzed by partial least squares structural equation modeling (PLS-SEM) for validating the proposed model. Finally, the results were comparatively discussed to explain the dual-pathway between vertical leadership and shared leadership. And the practical implications were presented for the project managers in infrastructure project teams.

Drawing on social learning theory and social cognitive theory, the results show that both participative leadership and task-oriented leadership can facilitate shared leadership. Further, team atmosphere fully mediates the link between participative leadership and shared leadership. Team efficacy fully mediates the relation between task-oriented leadership and shared leadership. Also, role clarity has a negative moderating effect on the former path.

The study extends the knowledge of leadership theory in the construction field. Based on the proposed conceptual model and PLS-SEM results, this study unveils the black box between vertical leadership and shared leadership and contributes to the theory of leadership on how the impact of different vertical leadership on team process promotes shared leadership.

Work-family conflict (WFC), a common problem in all sectors of every economy, has always been linked to negative consequences for individuals, families and employment organisations. However, owing to contextual and situational differences coupled with inconsistent findings, more studies on WFC are indispensable to disentangle the consequential effects of WFC, especially amongst construction professionals. More so, little is known about the dual role of project management self-efficacy (PMSE) in the WFC-performance relation. Thus, the purpose of the present study is to examine the mediating-moderating effects of PMSE on the WFC-performance nexus amongst construction professionals in a developing economy.

Data for this study came from a cross-sectional survey (questionnaire) administered to 302 construction professionals in Ghana using convenience sampling technique. And partial least square-based structural equation modelling (PLS-SEM) was performed, which included the assessment of measurement and structural models.

The results of this study support the mediating–moderating model of WFC, in which PMSE simultaneously mediates and moderates the negative influence of WFC on project performance of construction professionals; thus, validating the dual role of PMSE through the lens of Hobfoll's (1989) conservation of resource theory.

Data were collected from a conveniently sampled construction professionals in Ghana. Thus, the sampling framework, including only the construction professionals in three regions of Ghana, does not ensure the full generalisation of the results.

The findings of the study provide significant implication for construction organisations and practitioners. Construction organisations and practitioners seeking to mitigate the negative consequences of WFC on project performance should focus on building on PMSE of the construction professionals. Further, a responsive work environment is needed to cater for family needs of the construction professionals.

This paper is one of the first to have tested a model including the mediating-moderating effects of PMSE in the construction industry from a developing country perspective. The study, therefore, enriches the prevailing literature from under-represented context by examining the mediating-moderating effects of PMSE on WFC and project performance nexus that has not been previously investigated.

The study investigates the effects of core self-evaluations on project managers' competencies. The study further examines the moderating effect of cultural intelligence between core self-evaluations and competencies.

In this study, with a descriptive-survey approach, necessary data were collected from a sample of project managers of Iran's Ministry of Communication and Information Technology through questionnaires. The conceptual framework of the study was tested according to structural equation modeling by PLS software.

Findings show that core self-evaluations have positive and significant effects on project managers' competencies among which psychological stability has the greatest effect. Furthermore, the moderating role of cultural intelligence in the relationship between core self-evaluations and project managers' competencies was confirmed. According to the calculated coefficient, motivational cultural intelligence had the greatest role.

The data were collected using a questionnaire at a single point in time, and thus, not allowing cause–effect inferences. Also, the demographic variables were not controlled.

The results of this study provide some implications for HRM professionals and project managers interested in promoting a system of HR practices that contributes to enhancing project managers' competencies and effectiveness.

This study advances our understanding of the factors that have an effect on project managers' competencies, specifically on a list of main competencies necessary for project managers' performance. Moreover, it suggests that project managers' competencies will benefit from cultural intelligence, which will display a greater effect when embedded in highly diverse cultural contexts.

The purpose of this paper is to consider the ways in which large‐scale e‐participation projects can be evaluated. It argues that existing evaluation approaches can be improved upon by taking a closer look at the characteristics of the users of such systems, by estimating their self‐efficacy.

Literature review is followed by the development of relevant research questions, and an assessment of points at which relevant and useful data can be collected in a petitioning process.

It is found that data relating to self‐efficacy, while not simple to collect, can add much to the evaluation process, and have the potential to result in more effective projects and systems.

The findings are specific to one project, EuroPetition, which will allow the co‐ordination and submission of cross‐border pan‐European petitions.

The paper represents the first attempt to integrate perspectives derived from social cognitive theory to the evaluation of a large e‐participation project. Self‐efficacy is discussed in terms of both computer self‐efficacy and political self‐efficacy.

This study aims to investigate the effects of individual entrepreneurial orientation (IEO), entrepreneurial self-efficacy (ESE) and entrepreneurial managerial skills (EMS) on project performance at both the individual and team levels using a holistic framework.

Data were collected from 308 university students involved in two different types of projects (entrepreneurship and nonentrepreneurship) in Qatar.

The confirmatory factor analysis and structural equation modeling showed that both IEO and EMS positively and almost equally influenced project performance. However, ESE’s impact on project performance was significantly mediated by both IEO and EMS and, in practice, it should be considered a motivational factor for increasing the impact of IEO and EMS on project performance.

Project managers should recognize the value of the management and leadership skills examined in this study and their implications for project outcomes.

This study provides novel insights into the role these factors play in effective project management, thus allowing organizations to make effective decisions to reinforce these factors and gain a competitive advantage.

Scholars have begun to recognize the importance of integrating organizational issues into real options theory. In doing so, some argue that options are inappropriate for evaluating critical strategic investments. In a more in-depth analysis, we argue that the organizational form that an option takes has a profound effect on exercise decisions. When options are initially integrated, organizational elements such as routines and culture become increasingly intertwined over time, raising the cost of abandoning the option – in effect, pushing firms to exercise options. In contrast, initially isolated options become idiosyncratic and more costly to integrate over time – pushing firms to kill them. There are also reputational and social capital effects that may bias exercise decisions beyond the mere consideration of costs, leading to escalation or missed opportunities.

Accordingly, firms must first be able to manage the associated organizational costs and minimize systematic bias in exercise decisions. Real options theory is moving away from the limitations of the financial options analogy and is increasingly integrated with strategy and organization theory. This shift requires that researchers consider issues such as intermediate organizational forms, external monitoring of exercise decisions, portfolios of competing options, and group process interventions.

Taking a transdisciplinary viewpoint, the authors synthesize the literature on the theoretical, methodological, and epistemological issues in the study of corruption as a construct in project management (PM) as applied to IDPs. While the study of corruption has focused on “who and why” to help understand corruption's occurrence, there is a lack of analysis on “where and how” to ensure corruption's prevention and improve PM to better support delivery actors. The authors rely on four theoretical frameworks to help interpret evidence and formulate a coherent model for managing project socio-cultural context: organizational interests theory (OIT), principal-agent theory (PAT), culturalist theory (CT) and institutional theory (IT).

International development projects (IDPs) have become very complex with greater diversity of donor agencies and aid delivery actors. The relative lack of success of development aid has been linked in part to corruption at various levels. PM methods are essential to help prevent this behavior. To assess the complexity of this problem, the authors completed a grounded theory research based on thirty interviews with international development experts, balancing representation from donor and receiving countries, as well as project managers in public and private sectors. Data are analyzed using a qualitative sorting process using the software NVivo.

Results show that PM, beyond PM's practical nature and technical focus, can offer numerous opportunities to prevent corruption impact on project actors, even in a context where anti-corruption initiatives may be perceived as less effective. The authors present an original theoretical model that illustrates which actors, events and context are related and linked in the dynamic efforts to understand and combat corruption in international development endeavors. Context is linked to dynamics: foreign aid cycle, capture opportunities, context pressures, personal damages done, and control mechanisms exercised.

The outcomes and quality of IDPs remain highly controversial, especially with perception of corruption by various stakeholders. Some experts recognize the inefficacy of applying classical PM tools and processes. By contrasting findings to the literature, the authors conclude that an alternative approach to overcome the taboos and prejudices in studying corruption is to ask a different research question. A research agenda is proposed for solving this phenomenon. To guide PM research on development projects, focusing on the “where and how” of corruption requires addressing how actors build their knowledge management capabilities, and address the social and cultural challenges inherent to IDPs.