On the adaptive function of children's and adults’ false memories

Recent research has shown that memory illusions can successfully prime both children's and adults' performance on complex, insight-based problems (compound remote associates tasks or CRATs). The current research aimed to clarify the locus of these priming effects. Like before, Deese–Roediger–McDermott (DRM) lists were selected to prime subsequent CRATs such that the critical lures were also the solution words to a subset of the CRATs participants attempted to solve. Unique to the present research, recognition memory tests were used and participants were either primed during the list study phase, during the memory test phase, or both. Across two experiments, primed problems were solved more frequently and significantly faster than unprimed problems. Moreover, when participants were primed during the list study phase, subsequent solution times and rates were considerably superior to those produced by those participants who were simply primed at test. Together, these are the first results to show that false-memory priming during encoding facilitates problem-solving in both children and adults.     

Meaning making in mothers’ and children's narratives of emotional events

Narrative coherence and the inclusion of mental state language are critical aspects of meaning making, especially about stressful events. Mothers and their 8- to 12-year-old children with asthma independently narrated a time they were scared, frustrated, and happy. Although mothers’ narratives were generally more coherent and more saturated with mental state language than children's narratives, for both mothers and children narratives of negative events were more coherent and contained more mental state language than narratives of positive events overall, and narratives of scary events contained more mental state language than narratives of frustrating events. Coherence appears to be multifaceted, in that the three dimensions of coherence coded, context, chronology, and theme were not strongly interrelated within narratives of the same event, but use of mental state language, including cognitive-processing and emotion words, appears to be more integrated. Moreover, while thematic coherence seems to be a consistent individual narrative style across valence of event being narrated, mental state language appears to be a consistent style only across the two stressful event narratives. Finally, and quite surprisingly, there were virtually no relations between mothers’ and children's narrative meaning making.     

Get the gist? The effects of processing depth on false recognition in short-term and long-term memory

Gist-based processing has been proposed to account for robust false memories in the converging-associates task. The deep-encoding processes known to enhance verbatim memory also strengthen gist memory and increase distortions of long-term memory (LTM). Recent research has demonstrated that compelling false memory illusions are relatively delay-invariant, also occurring under canonical short-term memory (STM) conditions. To investigate the contributions of gist to false memory at short and long delays, processing depth was manipulated as participants encoded lists of four semantically related words and were probed immediately, following a filled 3- to 4-s retention interval, or approximately 20 min later, in a surprise recognition test. In two experiments, the encoding manipulation dissociated STM and LTM on the frequency, but not the phenomenology, of false memory. Deep encoding at STM increases false recognition rates at LTM, but confidence ratings and remember/know judgments are similar across delays and do not differ as a function of processing depth. These results suggest that some shared and some unique processes underlie false memory illusions at short and long delays.     

Schoolchildren’s autobiographical memory: COMT gene Val158Met polymorphism effects on emotional content and quality of first memories

Cognitive Processing - Autobiographical memory is a cognitive function strongly related to emotional processing as autobiographical memory often includes emotional content. The COMT gene Val158Met...     

The effects of readers’ goals on inference generation and memory for texts

We investigated the effects of readers' goals on inference generation and memory for expository text. College students (N = 82) read texts for the purpose of either study or entertainment. On-line inference generation was recorded via think-aloud procedures, and off-line memory was assessed via free recall. Reading goal strongly influenced inferential activity: Readers with a study goal produced more coherence-building (i.e., backward/explanatory and forward/predictive) inferences, whereas readers with an entertainment goal produced more associations and evaluations. These differences were associated with superior memory for the texts in the study condition. The results indicate that inference generation during reading is partly strategic and is influenced systematically by reading purpose. We propose that reading goals influence readers' standards of coherence, which in turn influence the types of inferences that they draw and the final memory representations that they construct.     

Self-reference and emotional memory effects in older adults at increased genetic risk of Alzheimer’s disease

The present study investigated whether cognitively healthy older adults who are carriers of the ε4 allele of apolipoprotein E, the most prevalent genetic risk factor for late-onset Alzheimer’s disease, benefit from self-referential processing and emotional processing to the same degree as noncarriers of this gene. Participants encoded emotional and nonemotional narratives using a baseline-orienting task, semantic elaboration, or imagination-based self-referential processing and then completed a recognition memory test. Both groups of older adults showed enhanced recognition memory for narrative information following self-referential processing relative to semantic elaboration, and the magnitude of this memory effect was not affected by ε4 status. However, older adult ε4 carriers did not show an emotional enhancement effect, whereas older adult ε4 noncarriers did. These results indicate that whereas the self-reference effect is not attenuated in cognitively healthy older adults ε4 carriers, deficits in emotional memory may be an early cognitive marker of abnormal decline.     

Memory loss versus memory distortion: The role of encoding and retrieval deficits in Korsakoff patients’ false memories

Recent studies with the Deese/Roediger-McDermott (DRM) paradigm have revealed that Korsakoff patients show reduced levels of false recognition and different patterns of false recall compared to controls. The present experiment examined whether this could be attributed to an encoding deficit, or rather to problems with explicitly retrieving thematic information at test. In a variation on the DRM paradigm, both patients and controls were presented with associative as well as categorised word lists, with the order of recall and recognition tests manipulated between-subjects. The results point to an important role for the automatic/controlled retrieval distinction: Korsakoff patients’ false memory was only diminished compared to controls’ when automatic or short-term memory processes could not be used to fulfil the task at hand. Hence, the patients’ explicit retrieval deficit appears to be crucial in explaining past and present data. Results are discussed in terms of fuzzy-trace and activation-monitoring theories.     

“Passion” versus “patience”: the effects of valence and arousal on constructive word recognition

Accumulating evidence suggests that emotional information is often recognised faster than neutral information. Several studies examined the effects of valence and arousal on word recognition, but yielded partially diverging results. Here, we used two alternative versions of a constructive recognition paradigm in which a target word is hidden by a visual mask that gradually disappears, to investigate whether the emotional properties of words influence their speed of recognition. Participants were instructed either to classify the incrementally appearing word as emotional or non-emotional (semantic categorisation task) or to decide whether the appearing letter string is an existing word or not (lexical decision task). Results from both tasks revealed faster recognition times for high- compared to low-arousing words, and for positive compared to negative or neutral words. These findings indicate a recognition advantage for emotionally positive and highly arousing stimuli that persists even when visual word recognition is hampered and participants are encouraged to make more active, semantic inferences to generate the meaning of the emerging word.     

Emotions and false memories: valence or arousal?

The effects of mood on false memories have not been studied systematically until recently. Some results seem to indicate that negative mood may reduce false recall and thus suggest an influence of emotional valence on false memory. The present research tested the effects of both valence and arousal on recall and recognition and indicates that the effect is actually due to arousal. In fact, whether participants' mood is positive, negative, or neutral, false memories are significantly more frequent under conditions of high arousal than under conditions of low arousal.     

Differences in adult and adolescent listeners’ ratings of valence and arousal in emotional prosody

ABSTRACT

Judgments of emotional stimuli’s valence and arousal can differ based on the perceiver’s age. With most of the existing literature on age-related changes in such ratings based on perceptions of visually-presented pictures or words, less is known about how youth and adults perceive and rate the affective information contained in auditory emotional stimuli. The current study examined age-related differences in adolescent (n?=?31; 45% female; aged 12–17, M?=?14.35, SD?=?1.68) and adult listeners’ (n?=?30; 53% female; aged 21–30, M?=?26.20 years, SD?=?2.98) ratings of the valence and arousal of spoken words conveying happiness, anger, and a neutral expression. We also fitted closed curves to the average ratings for each emotional expression to determine their relative position on the valence-arousal plane of an affective circumplex. Compared to adults, adolescents’ ratings of emotional prosody were generally higher in valence, but more constricted in range for both valence and arousal. This pattern of ratings is suggestive of lesser differentiation amongst emotional categories’ holistic properties, which may have implications for the successful recognition and appropriate response to vocal emotional cues in adolescents’ social environments.     

Omitting details from post-event information: are true and false memory affected in the same way?

Participants who witness an event and later receive post-event information that omits a critical scene are less likely to recall and to recognise that scene than are participants who receive no post-event information (Wright, Loftus, & Hall, 2001). The present study used the Deese-Roediger-McDermott (DRM) paradigm, in which participants study lists of semantic associates (e.g., hot, snow, warm, winter) that commonly elicit false memories of critical non-presented words (e.g., cold), to determine whether omitting information from a second presentation decreases memory for both presented and non-presented information. Participants were presented with a list of the semantic associates of six non-presented words. For half the participants, this list was presented a second time with the semantic associates of one of the non-presented words omitted. As expected, participants were less likely to recall and to recognise the presented words when they had been omitted from the second presentation. Omission also decreased the rate at which non-presented words were recalled, although false recognition of these words was not reduced. These results suggest that false recognition may be particularly difficult to attenuate and that post-event omission may be more detrimental to memory accuracy than previously thought.     

Experts’ memory: an ERP study of perceptual expertise effects on encoding and recognition

This study examined how perceptual expertise facilitates encoding and recognition. The electroencephalogram of car experts and car novices was recorded in the study as well as test phases of a remember/know task with car and bird stimuli. Car expertise influenced performance and event-related potentials (ERPs) for cars but not birds. Experts recognized and “recollected” cars more accurately, while novices had more false alarms. The ERPs provided neural evidence for theoretical assumptions about expert memory. Memory encoding in the study phase was less effortful and more elaborate for experts than novices, as indicated by lower mean amplitudes for subsequently “recollected” cars and by indistinguishable differences due to memory for recollection and familiarity. The parietal old/new effect, a correlate of recollection measured during recognition testing, was only found for experts. The results show that refined perceptual and semantic processing, characteristics of perceptual expertise, facilitate both memory encoding and recognition memory.     

Memory and coping with stress: The relationship between cognitive–emotional distinctiveness,memory valence,and distress

Cognitive–emotional distinctiveness (CED), the extent to which an individual separates emotions from an event in the cognitive representation of the event, was explored in four studies. CED was measured using a modified multidimensional scaling procedure. The first study found that lower levels of CED in memories of the September 11 terrorist attacks predicted greater frequency of intrusive thoughts about the attacks. The second study revealed that CED levels are higher in negative events, in comparison to positive events and that low CED levels in emotionally intense negative events are associated with a pattern of greater event-related distress. The third study replicated the findings from the previous study when examining CED levels in participants’ memories of the 2004 Presidential election. The fourth study revealed that low CED in emotionally intense negative events is associated with worse mental health. We argue that CED is an adaptive and healthy coping feature of stressful memories.     

The anatomy of adolescents’ emotional engagement in schoolwork

This study explores the complexity of emotionally engaging schoolwork among students by analysing the interrelation between the affective and the social dimensions of emotional engagement. The data were collected from 78 Finnish sixth-grade (aged 12–13 years) and 89 eighth-grade (aged 14–15 years) students using picture tasks. The results show that the main elements of the affective dimension are the valuing of schoolwork and the enjoyment of learning, and the main element of the social dimension is a sense of belonging in terms of social cohesion and the support experienced by students. Furthermore, the results suggest that emotional engagement has internal dynamics: the affective and social dimension influence each other, regulating the students’ sense of emotional engagement. Consequently, neither of the dimensions alone result in strong, balanced emotional engagement. In addition, the results show that the relation between the affective and social dimension was more unbalanced in the peer interaction than in the teacher–student interaction at both grade levels. This suggests that tensions in the peer interaction at school make for a more complicated context in terms of emotional engagement.     

U.S. television programming’s effects on aggressive behavior of children and adolescents

Discussions about the effects of television violence often fail to clearly define the nature of the effect and of the televised material. This article reviews the various facets of the issue and of the research that deals with them, focusing on one specific aspect that is often regarded as most crucial in public discussions and among researchers: the effect of actually televised entertainment programs on the aggressive behavior of children and adolescents. There is little research on that aspect of the issue and, in contrast to laboratory experiments on media violence, it does not show significant television effects. However, none of the existing studies reflect the changes in home entertainment available now as a result of cable television and VCRs and their possible effects on viewers.     

Can task modifications influence children's performance on false belief tasks?

Theory of mind (ToM) is commonly measured in young children by the false belief task. Many researchers claim that 3-year-olds' failure on false belief tasks is due to task constraints. Experiment 1 empirically tested the claim made by Wellman, Cross, and Watson (2001 Wellman, H. M., Cross, D. and Watson, J. 2001. Meta-analysis of theory-of-mind development: The truth about false belief. Child Development, 72: 655–684. [Crossref], [PubMed], [Web of Science ®] , [Google Scholar]), that even when variables that enhance performance on the false belief task (deception; participation in transformation; salience; and item not real and present) are included in one task, 3-year-olds will still fail to perform above chance level. On the standard task 4-year-olds did perform significantly better than 3-year-olds, although there was no significant difference on the adapted task. Compared to the standard task, 3-year-olds performed better on the adapted task, although this improvement was not significant and performance was still not above chance level. Experiment 2 examined the influence of two additional variables; presence of protagonist at the time when the false belief question is asked, and the order in which test questions are asked (memory preceding false belief or vice versa). Results found no significant effects of either presence of the protagonist or question order on the performance of participants. Results are discussed with reference to reasons behind the failure of some children on false belief tasks.     

Testing the repression hypothesis: Effects of emotional valence on memory suppression in the think – No think task

It has been proposed that performance in the think – no think (TNT) task represents a laboratory analogue of the voluntary form of memory repression. The central prediction of this repression hypothesis is that performance in the TNT task will be influenced by emotional characteristics of the material to be remembered. This prediction was tested in two experiments by asking participants to learn paired associates in which the first item was either emotionally positive (e.g. joy) or emotionally negative (e.g. hatred). The second word was always emotionally neutral (e.g. socks). Consistent with the repression hypothesis, significant memory suppression was observed in both experiments following ‘no think’ instructions for memories associated with emotionally negative material. No suppression was observed for memories associated with emotionally positive information. Implications of these findings for the relationship between performance in the TNT task and the controversial notion of memory repression are considered.     

Serial-position effects in infants’ recognition memory

Preverbal infants (7 months of age) were repeatedly shown a fixed series of photographs of adult female faces. The effects of the order of presentation of a photo (first, middle, or last) and the duration of retention (5 sec, 1 rain, or 5 rain) were subsequently assessed in a probe-recognition test. Both primacy and recency effects were obtained, but there was no evidence of recognition of the face that appeared in the middle of the series. There was also no evidence of recognition of the most recently studied face following the 5-rain retention interval. The bowed serial-position function and labile recency effect match those found in the performance of older subjects in classical verbal learning tasks, and we suggest an automatic process underlying these effects. Our explanation emphasizes differential learning and the context of the items to be remembered.     

Awe’s effects on generosity and helping

It is unclear whether positive emotionality in general, or some specific positive emotions (e.g. other-oriented ones), but not others (e.g. self-oriented and, possibly, stimulus-oriented ones), enhance prosocial thoughts, dispositions, and behavior. We focus here on awe and argue that, although being primarily stimulus-oriented and not necessarily social in its very nature, awe should enhance prosociality for several theoretical reasons. In replicating and extending previous initial research, we found in two online experiments that the induction of awe (video clip or recall), compared to the induction of amusement or a neutral condition, leads to increased prosocial behavioral intentions of generosity (spontaneous sharing of hypothetical gains) and help of a person in need – in hypothetical everyday life situations. Awe’s effect on prosociality was independent from participants’ religiosity (in both experiments) but seemed to be clearer for those in need of such affective stimulation, i.e. less agreeable participants (Experiment 2).