Resumen: Despite the spread of Public-Private Partnerships (PPPs) and their interest among academicians and policy-makers, many investigations generally treat them as a homogenous mode of governance neglecting their different forms. The present work investigates the factors that determine the concrete form of PPP finally adopted. We use the Transaction Costs Theory (TCT) to analyse 11,821 PPPs in 110 developing countries from 1997 to 2017. The results show that the greater the amount of specific investment and the more unfavourable the context in which it is implemented, PPP adopts forms where the private party has a greater degree of control. Idioma: Inglés DOI: 10.1080/14719037.2019.1637014 Año: 2020 Publicado en: Public Management Review 22, 10 (2020), 1489-1514 ISSN: 1471-9037 Factor impacto JCR: 5.898 (2020) Categ. JCR: NURSING rank: 63 / 346 = 0.182 (2020) - Q1 - T1 Categ. JCR: PUBLIC ADMINISTRATION rank: 3 / 47 = 0.064 (2020) - Q1 - T1 Categ. JCR: MANAGEMENT rank: 63 / 225 = 0.28 (2020) - Q2 - T1 Factor impacto SCIMAGO: 1.622 - Management Information Systems (Q1) - Public Administration (Q1) - Management of Technology and Innovation (Q1)