“…The literature draws from different general theoretical foundations in organizational theory, and cognitive and behavioural sciences, including Groupthink (Hällgren, 2010), sensemaking (Musca et al, 2014), self-justification theory (Jani, 2008), risk propensity and uncertainty avoidance (Keil et al, 2000), or 'planning fallacy' (Flyvbjerg, 2013), among others. All in all, the research displays strong heterogeneity in terms of theoretical background and researched phenomena, thus reflecting the multi-faceted nature of project decision behaviour.…”