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Conversation is generally characterized by smooth transitions between turns, with only very short gaps. This entails that responders often begin planning their response before the ongoing turn is finished. However, controversy exists about whether they start planning as early as they can, to make sure they respond on time, or as late as possible, to minimize the overlap between comprehension and production planning. Two earlier EEG studies have found neural correlates of response planning (positive ERP and alpha decrease) as soon as listeners could start planning their response, already midway through the current turn. However, in these studies, the questions asked were highly controlled with respect to the position where planning could start (e.g., very early) and required short and easy responses. The present study measured participants’ EEG while an experimenter interviewed them in a spontaneous interaction. Coding the questions in the interviews showed that, under these natural circumstances, listeners can, in principle, start planning a response relatively early, on average after only about one third of the question has passed. Furthermore, ERP results showed a large positivity, interpreted before as an early neural signature of response planning, starting about half a second after the start of the word that allowed listeners to start planning a response. A second neural signature of response planning, an alpha decrease, was not replicated as reliably. In conclusion, listeners appear to start planning their response early during the ongoing turn, also under natural circumstances, presumably in order to keep the gap between turns short and respond on time. These results have several important implications for turn-taking theories, which need to explain how interlocutors deal with the overlap between comprehension and production, how they manage to come in on time, and the sources that lead to variability between conversationalists in the start of planning.

Using truth-value judgment tasks, we investigated the on-line processing of counterfactual conditionals such as If kangaroos had no tails, they would topple over. Face-value plausibility of the counterfactual as well as the complexity of the antecedent were manipulated. Results show that readers’ judgments deviate from face-value plausibility more often when the antecedent is complex, and when the counterfactual is plausible rather than implausible. We interpret our results based on the modal horizon assumption of von Fintel (2001) and argue that they are compatible with a variably strict semantics for counterfactuals (Lewis, 1973). We make use of computational modeling techniques to account for reaction times and truth-value judgments simultaneously, showing that implementing detailed process models deepens our understanding of the cognitive mechanisms triggered by linguistic stimuli., Proceedings of Sinn und Bedeutung, Vol 24 No 2 (2020): Proceedings of Sinn und Bedeutung 24

Recent research highlights the influence of (e.g., task) context on conceptual retrieval. In order to assess whether conceptual representations are context-dependent rather than static, we investigated the influence of spatial narrative context on accessibility for lexical-semantic information by exploring competition effects. In two visual world experiments, participants listened to narratives describing semantically related (piano-trumpet; Experiment 1) or visually similar (bat-cigarette; Experiment 2) objects in the same or separate narrative locations while viewing arrays displaying these (“target” and “competitor”) objects and other distractors. Upon re-mention of the target, we analysed eye movements to the competitor. In Experiment 1, we observed semantic competition only when targets and competitors were described in the same location; in Experiment 2, we observed visual competition regardless of context. We interpret these results as consistent with context-dependent approaches, such that spatial narrative context dampens accessibility for semantic but not visual information in the visual world.

How do children map linguistic representations onto the conceptual structures that they encode? In the present studies, we provided 3-4 year old children with minimal-pair scene contrasts in order to determine the effect of particular event properties on novel verb learning. Specifically, we tested whether spatiotemporal cues to causation also inform children’s interpretation of transitive verbs either with or without the causal/inchoative alternation (She broke the lamp/the lamp broke). In Experiment 1, we examined spatiotemporal continuity. Children saw scenes with puppets that approached a toy in a distinctive manner, and toys that lit up or played a sound. In the causal events, the puppet contacted the object, and activation was immediate. In the noncausal events, the puppet stopped short before reaching the object, and the effect occurred after a short pause (apparently spontaneously). Children expected novel verbs used in the inchoative transitive/intransitive alternation to refer to spatiotemporally intact causal interactions rather than to 'gap' control scenes. In Experiment 2, we manipulated the temporal order of sub-events, holding spatial relationships constant, and provided evidence for only one verb frame (either transitive or intransitive). Children mapped transitive verbs to scenes where the agent's action closely preceded the activation of the toy over scenes in which the timing of the two events was switched, but did not do so when they heard an intransitive construction. These studies reveal that children’s expectations about transitive verbs are at least partly driven by their nonlinguistic understanding of causal events: children expect transitive syntax to refer to scenes where the agent's action is a plausible cause of the outcome. These findings open a wide avenue for exploration into the relationship between children’s linguistic knowledge and their nonlinguistic understanding of events.