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Despite the popularity of the “behavioral approach,” there is as yet a lack of guidance on the selection and use of appropriate behavioral theories for specific planning purposes. Based on a literature review of 318 articles in spatial planning-related journals, this paper presents a portfolio of behavioral theories by types of behavior, key variables, rules, and research methods. In addition, based on the survey of twenty-two international experts, it cross-validates the findings and highlights particularly appropriate theories for certain types of behavior dealt in related disciplines. Finally, the paper derives discussion points including the applicability of various behavioral theories in urban models such as space and time-sensitive dynamic simulations.

Land policy influences how and by whom land is used; therefore, it impacts the efficiency and equity of land use. This paper offers an economic perspective on efficiency and equity as fundamental purposes of planning and land policy. It brings a highly needed mutual understanding between planning and economics, whilst acknowledging the limitations of the theoretical concepts of efficiency and equity in their real-world applications. The paper also provides a solid ground for analysing trade-offs between efficiency and equity of land policy interventions. Situations minimising trade-offs should be of particular interest as they provide opportunities for improvements without necessary sacrifices.

Although growth management programs have many purposes, a critical one is to contain urban and suburban sprawl. Their efficacy in this regard is not well understood. In this paper, we review a comprehensive set of growth management tools, used by urban planners and policymakers to curb sprawl, starting with the history of the tool, then describing how it works in practice, and finally presenting any available empirical evidence on how well it works to curb sprawl and/or achieve other public purposes. While growth management isn't a panacea for controlling sprawl, it is certainly not the failure implied by critics.

“Transaction costs,” as a well-established theory in New Institutional Economics, has been used to explain and analyze various planning matters for about 30 years since its introduction to planning literature. However, there is no study on how planning-related studies have utilized the theory. This paper conducts a systematic review that aims to develop a better understanding of how transaction-cost theory is used in planning literature. The review shows that while potential contributions and implications of transaction costs have been conceptually discussed in planning literature, the empirical studies have remained limited, particularly concerning the magnitude of such costs in planning systems.

The world is experiencing the impacts of COVID-19 pandemic – from lockdown restrictions to economic uncertainty. Though troubling, the COVID-19 crisis presents an opportunity to galvanize support to strengthen urban planning's capacity in Africa. This paper draws on the global response to the pandemic to proffer three lessons that can bolster planning action to respond to health, spatial and socio-economic challenges confronting African cities: (i) recognition of urban planning as an urgent public health activity; (ii) emphasizing urban planning's innate capacity to address health crises; and (iii) citizen engagement to accept planning measures. These lessons are likely to improve urban planning action.