A cross-linguistic investigation of meaning-driven combinatorial restrictions in clausal embedding. PIs: Wataru Uegaki and Maribel Romero, co-I: Floris Roelofsen. AHRC-DFG. 2021–2024

Alternative Questions(first phase) and Alternative Questions and Beyond (second phase) within the Research Unit Questions at the Interfaces. PI: Maribel Romero. DFG. 2016–2019 (first phase) and 2019–2022 (second phase).

German Particles in Questions within the Research Unit Questions at the Interfaces. PIs: Josef Bayer, Carsten Eulitz and Maribel Romero. DFG. 2016–2019 (first phase) and 2019–2022 (second phase).

Semantics and Pragmatics of Counterfactuals (first phase) and Semantics and Pragmatics of Counterfactuals: From sentence to discourse (second phase) within the Research Unit What if? On the Epistemological, Pragmatic, Psychological and Cultural Significance of Counterfactual Thinking. PI: Maribel Romero. DFG. 2012–2015 (first phase) and 2015–2018 (second phase).

Tense and Aspect in Multilingual Semantic Construction. PIs: Miriam Butt and Maribel Romero. Nuance Foundation. 2014–2017.

Bias in Polar Questions within the SPP (Priority Programme) 1727 Xprag.de: New Pragmatic Theories based on Experimental Evidence. PIs: Bettina Braun and Maribel Romero. DFG. 2014–2017.