Pragmatic inferences are one way to study false memories in real-world situations. We aimed to investigate variances in responses to pragmatic implication sentences between Portuguese and American data, presenting, for the first time, normative data of cued recall and recognition for pragmatic implication sentences in Portuguese. In Study 1 we analyzed cued-recall data for Portuguese pragmatic sentences. The proportions of cued- recall for correct and inference responses of each sentence did not significantly correlate with the values of American normative data. In Studies 2a and 2b we analysed forced-recognition data for pragmatic sentences, one with American participants and English sentences (Study 2a) and the other with Portuguese participants and Portuguese sentences (Study 2b). Moreover, two conditions of sentences presentations were applied to eventually detect an influence of the sentences’ format, which was not find in both studies. The levels of recognition for correct and inferences were very similar between those two studies but the correlation, sentence by sentence, was low. Together, these results suggest an important recommendation for further studies - normed material for a specific language/culture is a crucial factor to be considered when conducting research on pragmatic inferences.
Human memory can be unreliable, and when reading a sentence with a pragmatic implication, such as “the karate champion hit the cinder block,” people often falsely remember that the karate champion “broke” the cinder block. Yet, research has shown that encoding instructions affect the false memories we form. On the one hand, instructing participants to imagine themselves manipulating the to-be-recalled items increase false memories (imagination inflation effect). But on the other hand, instructions to imagine have reduced false memories in the DRM paradigm (imagination facilitation effect). Here, we explored the effect of imaginal encoding with pragmatic inferences, a way to study false memories for information about everyday actions. Across two experiments, we manipulated imaginal encoding through the instructions given to participants and the after-item filler task (none vs. math operations). In Experiment 1, participants were either assigned to the encoding condition of imagine+no filler; pay attention+math; or memorize+math. In Experiment 2, the encoding instructions (imagine vs. memorize) and the filler task (none vs. math) were compared across four separate conditions. Results from the two experiments showed that imagination instructions lead to better memory, by showing a higher proportion of correct responses and better performance in a memory benefit index. Similarly, a significant reduction of false memories was observed across both experiments, even though a complementary Bayesian analysis only supported this conclusion for Experiment 1. The findings show that imaginal encoding improves memory, suggesting the engagement of a distinctiveness heuristic and source-monitoring process.
This study aimed to analyse the effect of retention intervals on associative and thematic false memories. Two experiments, using two types of critical items that were either associatively or thematically related to studied material, were conducted. In both experiments, one group of participants performed a recognition test immediately after the presentation of lists, and another group performed the task one week later. In Experiment 1, the recognition test consisted of pairs of items with four response alternatives (both items had been presented, only the left item had been presented, only the right item had been presented or none of the items had been presented). Critical items were also manipulated so that they were either presented in or absent from the list. In Experiment 2, a standard recognition test that differed in the mode of presentation was used: self-paced or speeded response. Both experiments showed that associative critical items were more recognised than thematic critical items in the immediate condition. However, whereas associative critical items decayed after a oneweek delay, thematic critical items were similarly recognised at both retention intervals. The findings of the present study suggest that each type of processassociative and thematicbehave differently over time.
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