Previous research has shown that rating words for their relevance to a future scenario enhances memory for those words. The current study investigated the effect of future thinking on false memory using the Deese/Roediger–McDermott (DRM) procedure. In Experiment 1, participants rated words from 6 DRM lists for relevance to a past or future event (with or without planning) or in terms of pleasantness. In a surprise recall test, levels of correct recall did not vary between the rating tasks, but the future rating conditions led to significantly higher levels of false recall than the past and pleasantness conditions did. Experiment 2 found that future rating led to higher levels of false recognition than did past and pleasantness ratings but did not affect correct recognition. The effect in false recognition was, however, eliminated when DRM items were presented in random order. Participants in Experiment 3 were presented with both DRM lists and lists of unrelated words. Future rating increased levels of false recognition for DRM lures but did not affect correct recognition for DRM or unrelated lists. The findings are discussed in terms of the view that false memories can be associated with adaptive memory functions.
Autobiographical memory (AM) is believed to serve self, social and directive functions; however, little is known regarding how this triad of functions operates in depression. Using the Thinking About Life Experiences questionnaire [Bluck, S., & Alea, N. (2011). Crafting the TALE: Construction of a measure to assess the functions of autobiographical remembering. Memory, 19, 470-486.; Bluck, S., Alea, N., Habermas, T., & Rubin, D. C. (2005). A TALE of three functions: The self-reported uses of autobiographical memory. Social Cognition, 23, 91-117.], two studies explored the relationship between depressive symptomology and the self-reported frequency and usefulness of AMs for self, social and directive purposes. Study 1 revealed that thinking more frequently but talking less frequently about past life events was significantly associated with higher depression scores. Recalling past events more frequently to maintain self-continuity was also significantly associated with higher depressive symptomology. However, results from Study 2 indicated that higher levels of depression were also significantly associated with less-frequent useful recollections of past life events for self-continuity purposes. Taken together, the findings suggest atypical utilisations of AM to serve self-continuity functions in depression and can be interpreted within the wider context of ruminative thought processes.
Previous research has shown that rating words for their relevance to a survival scenario leads to better retention of the words than rating them for self-reference. Past studies have, however, relied exclusively on an autobiographical self-reference task in which participants rate how easily a common noun brings to mind a personal experience. We report five experiments comparing survival processing to a descriptive self-reference task in which participants rated how well trait words described them. Rating trait adjectives for survival value led to higher levels of recall and recognition than rating them for their relevance to a moving home scenario. Rating the adjectives for self-reference, however, led to higher levels of recall (Experiments 1 and 3) and recollection (Experiment 2) than survival rating. Experiment 4 replaced trait adjectives with trait nouns and found that self-reference led to greater recognition accuracy than survival processing. Experiment 5 used trait nouns followed by tests of free recall and found a memory advantage following self-reference that was not influenced by the imageability of the stimuli. The findings are discussed in terms of theories of the survival processing and self-reference effects and the relationship between them.
Recent advances in multiplexed staining and imaging technologies promise to significantly improve the understanding of the functional states of individual cells and the interactions between the cells that comprise complex tissues. This often requires compilation of results from multiple samples. Quantitative integration of information between samples is complicated by variations in staining intensity and background fluorescence due to differences in fixation and staining between samples, and other technical artefacts that obscure biological variations. Failure to remove these unwanted artefacts will complicate downstream analysis and diminish the value of multiplexed imaging for clinical applications. Here, we describe a Robust intEnSiTy nORmalization mEthod (RESTORE) to compensate for unwanted variations in multiplexed imaging. To do this, first, we automatically identify negative control cells for each marker within the same tissue and then use their expression levels to infer background signal level. Second, the intensity profile is normalized by the inferred background level of the negative control cells to remove between-sample variation. We evaluated the performance with theoretical simulations and tested the method using two different datasets; one comprised of multiplex images of three adjacent sections cut from a tissue microarray (TMA) carrying 59 cores from separate breast cancers and stained on different days, and one comprised of a pair of longitudinal biopsies obtained from one patient where tissue biopsy, fixation, processing and multiplexed staining/imaging were done at different times. We demonstrate that RESTORE can remove unwanted variations effectively and shows robust performance. Our code and the demonstration datasets are freely available for download at https://gitlab.com/Chang_Lab/cycif_int_norm.
Three experiments investigated the relationship between future thinking and false memories. In Experiment 1, participants remembered familiar events (e.g., a holiday) from their past, imagined planning the same events in the future, or took part in a control condition in which they visualized typical events. They then rated a series of schema-related and schema-unrelated nouns for how likely they were to be encountered within those events. In a surprise recognition test, participants in the future condition falsely recognized more schema-related items than participants in the past and control conditions. No reliable effects of rating condition were observed in correct recognition. Experiment 2 found the same pattern when participants imagined unfamiliar events (e.g., taking part in a bank robbery) from past or future perspectives. Participants in Experiment 3 remembered a past or imagined a future holiday and were then instructed to generate items that someone might take on a holiday. Participants in the future condition generated more nonstudied items and fewer studied items relative to participants in the past condition. The findings of Experiments 1 and 2 indicate that simulating future events enhances the activation of related items that gives rise to false memories. The findings of Experiment 3 suggest that these activation processes play an adaptive role in guiding the planning of future events. (PsycINFO Database Record
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