Gerle, S. 1 , Klages, J. 1 , Holler, A. 1, 2, 3 & Weskott, T. 1, 2, 3
1 SPP \"Experimental Pragmatics\", Project ProProCon
2 German Department, University of Goettingen
3 Courant Research Centre \"Text Structures\", University of Goettingen
Recent accounts of the re-mention bias exerted by implicit causality verbs revolve around the question whether the bias is due to non- linguistic higher-order cognition, or whether it is rooted in linguistic knowledge (Hartshorne, 2014). The discourse-semantic account by Bott&Solstad (2014) sides with the latter, arguing specifically that agent-evocator verbs (AgEvo-Vs) carry a presupposition driving the NP2-bias. Since presuppositions show the survival property in the scope of operators, we tested for survival in two sentence completion experiments: under negation in Exp.1 ("[It's not true that] Stefan punished Marvin because he ..."; test language: German), and deontic modals in Exp.2 (baseline condition/universal/existential: "Paul [baseline/must/can] punish[ed] Jörg because he ..."). In both experiments, we found that NP2-bias and hence the presupposition of the AgEvo-V was affected by the operators: NP2 references dropped significantly in the presence of operators. Moreover, in Exp.2 this effect was limited to the existential (can) combined with negatively valenced verbs (punish): NP2 references dropped by ~40% compared to the baseline. These results (1) cast doubt on the assumption of a presuppositional component in the semantics of AgEvo-Vs, and (2) calls for a more complex semantic structure providing the basis for the differential interaction of linguistic and higher-order factors.