Contrasting different context sources in processing lifetime-tense (in)congruence: evidence from cumulative self-paced reading time experiments

The present study investigated the effects of (in)congruence between a referent’s lifetime (alive vs. dead) and verb tense during language processing, assessing to what extent these effects are modulated by the source of referent-lifetime knowledge. A referent’s lifetime status (dead vs. alive) was conveyed either via a known famous (Experiment 1) or unknown (Experiment 2) name, or was primed non-linguistically via a photograph of a known famous referent (Experiment 3). The findings suggest that referent-lifetime information influenced the processing of verb tense across the different context sources, but not at the earliest point possible (the verb). Instead, lifetime-tense congruence effects emerged two words later (Experiments 1 and 2), or in the sentence-final region (Experiment 3). The presence and size of nested effects were graded by lifetime context: larger congruence effects were elicited by Experiment 1 than by Experiment 2 in both tenses, with significant effects in the present perfect condition only in Experiment 3. In all, referent-lifetime status modulated tense processing in the expected direction, but with variations in whether effects emerge in post-verb regions or at sentence-end depending on how referent-lifetime knowledge was accessed. This temporal variability needs to be considered in accommodating context effects in processing accounts.