Welcome to this special JEAPM issue on impact assessment (IA) research, which — besides this introductory paper — includes 16 short papers contributed by a wide range of leading IA researchers from around the world. These papers provide for an overview of achievements, gaps and future...

There is a growing interest in the use of theory in order to move the field of impact assessment forward, hereunder to advance our understanding of effectiveness and make impact assessment influence decision-making. However, the extent of use of theory is uncertain. This article examines the use...

This short paper makes the case that most impact assessment (IA) has sustainable development as the stated goal, but that it doesn't deliver sustainable outcomes. A key pillar of sustainable development is equity, both intra-generational (defined after Lamorgese and Geneletti (2013, p.119) as...

To date, studies dealing with the impact assessment of changing irrigation policies predominately rely on normative rational choice models that are subject to rather restrictive assumptions such as profit-maximizing behavior. However, there is increasing evidence that decision makers pursue...

The objective of this study is to compare the effect of different types of public support for R&D projects on firms’ technological capabilities. We distinguish be-tween low-interest loans and subsidies and between national and European sup-port. Using data on 2,319 Spanish firms during the...

While land serves numerous societal functions and contributes to sustainable development, it is often unclear how these functions are affected by political decisions and common drivers of land use change, such as economic development, climate change and demographic change. This study evaluates...

This paper presents an application of a difference in differences model to measure environmental and economic impacts of Farmer Field School on crop and pest management practices of rice in Thailand. Panel data from 241 farm households were collected three times over a period of four years in...