Memory for emotional information is greater than for non-emotional information and is enhanced by sleep-related consolidation. Previous studies have focused on emotional arousal and valence of established stimuli, but what is the effect of sleep on newly acquired emotional information? Figurative expressions, which are pervasive in everyday communication, are often rated as higher in emotionality than their literal counterparts, but the effect of emotionality on the learning of metaphors, and the effect of sleep on newly acquired emotionally negative, positive and neutral language, is as yet poorly understood. In this study, participants were asked to memorise conventional (e.g. ‘sunny disposition’) and novel (e.g. ‘cloudy disposition’) metaphorical word pairs varying in valence, accompanied by their definitions. After a 12-hour period of sleep or wake, participants were tested on their recognition of word pairs and recall of definitions. We found higher arousal ratings were related to increased recognition and recall performance. Furthermore, sleep increased the accurate recognition of all word pairs compared to wake but also reduced the valence of word pairs. The results indicate better memory for newly acquired emotional stimuli, a benefit of sleep for memory, but also a reduction in emotional arousal as a consequence of sleep consolidation.

In grammaticalization studies, reanalysis is understood as the assignment of new meaning to formally unchanged elements, supported by bridging contexts compatible with the old and the reanalyzed meaning. The source determination hypothesis (SDH) predicts that parallel grammaticalization trajectories occur crosslinguistically, as similar source meanings give rise to similar inferences. One such pattern is the development of recent past markers from FINISH constructions. While grammaticalization pathways are well-documented crosslinguistically, the SDH has never been tested experimentally. In this study, we examine whether modern English speakers are sensitive to inferences arising from a bridging context identified as relevant to the grammaticalization of Old Spanish FINISH into a recent past marker. In a temporal distance judgment task, we examined whether the bridging context identified for Old Spanish facilitates an inference of temporal immediacy in contemporary English, where the construction has not been grammaticalized. In line with the SDH, the bridging context enhanced an inference of immediacy in contemporary English (Exp. 1), with specific grammatical features of the source determining its strength (Exp. 2). These results not only demonstrate the viability of testing hypotheses about language change using experimental pragmatics but also call for empirically refining the concept of source determination.

This experimental study explored how adopting a deceptive stance affects linguistic processes during real-time production of multi-sentence texts in speaking and writing. Language production involves planning, monitoring and editing – processes that give rise to and are shaped by fluctuations in processing demands. Deception is assumed to influence these processes as speakers and writers manage competing communicative goals: to be coherent while concealing the truth. Narratives were elicited by asking participants to account for events from four short films: two truthful and two deceitful, in both speaking and writing. In speaking, deception decreased the total number of pauses, but in longer deceptive texts, pausing instead increased, suggesting adaptive adjustments to regulate overt cues to lying. In writing, deception decreased text revisions and altered pause behaviour, suggesting that writers modified their production patterns when altering information. Together, these findings suggest that deceptive language production involves shifts in planning, monitoring and editing processes that manifest differently across modalities: while speech shows suppression of pauses, writing reveals subtle changes in revision and pausing behaviour. These results highlight modality-specific signatures of deception and demonstrate how speakers and writers dynamically adapt their language production processes to align with communicative intent.