The grammatical realization of polarity contrast: introductory remarks / Christine Dimroth and Stefan Sudhoff -- From polarity focus to salient polarity: from things to processes / Dejan Matic and Irina Nikolaeva -- Verum focus, sentence mood, and contrast / Horst Lohnstein -- Complementizers and negative polarity in German hypothetical comparatives / Julia Bacskai-Atkari -- Veridicality and sets of alternative worlds: on embedded interrogatives and the complementizers that and if / Peter Ohl -- Biased declarative questions in Swedish and German: negation meets modal particles (.al and doch wohl) / Heiko Seeliger -- Types of polar interrogatives in Hungarian and their interaction with inside and outside negation / Beata Gyuris -- Kinds of verum distinguished by aspect choice in Russian / Olav Mueller-Reichau -- Polarity focus and non-canonical syntax in Italian, French and Spanish: clitic left dislocation and si che/ si que-constructions / Davide Garassino and Daniel Jacob -- In search for polarity contrast marking in Italian: a contribution from echo replies / Cecilia Andorno and Claudia Crocco.