Effects of facial expression on working memory

In long‐term memory (LTM) emotional content may both enhance and impair memory, however, disagreement remains whether emotional content exerts different effects on the ability to maintain and manipulate information over short intervals. Using a working‐memory (WM) recognition task requiring the monitoring of faces displaying facial expressions of emotion, participants judged each face as identical (target) or not (non‐target) to that presented 2 trials back (2‐back). Negative expression was better and faster recognised, illustrated by higher target discriminability and target detection. Positive and negative expressions also induced a more liberal detection bias compared with neutral. Taking the preceding item into account, additional accuracy impairment (negative preceding negative target) and enhancement effects (negative or positive preceding neutral target) appeared. This illustrates a differential modulation of WM based on the affective tone of the target (mirroring LTM enhancement‐ and recognition bias effects), and of the preceding item (enhanced and impaired target detection).     

Jeux vidéo violents : leur impact sur la désensibilisation émotionnelle des jeunes

BackgroundThis research aims to evaluate the relationship between the use of violent video games (VVG) and emotional desensitization (ED).MethodTwo hundred and one pupils between the ages of 12 and 16 years completed a questionnaire measuring VVG exposure, empathy and ED.ResultsCorrelations and regression analyses revealed links between exposure to VVG and ED. The VVG experience is a risk factor in the presence of two moderating variables: preexisting empathy and the amount of time spent playing VVG.ConclusionsThe results suggest that exposure to VVG is a risk factor for ED.     

The imagination effect increases with an increased intrinsic cognitive load

The imagination effect occurs when learners imagining a procedure or concept perform better on a subsequent test than learners studying rather than imagining. Cognitive load theory explains this result by postulating that information is more likely to be transferred from working to long‐term memory under imagination conditions. In an experiment using elementary school students, it was hypothesised that the imagination effect would be larger using more complex, high intrinsic cognitive load information rather than less complex, low intrinsic cognitive load information because assistance in transferring information to long‐term memory provided by the imagination procedure is less important using simpler materials. Experimental results supported this hypothesis. It was concluded that imagination instructions are more likely to enhance learning when associated with complex information. Copyright © 2007 John Wiley & Sons, Ltd.     

Why computational models are better than verbal theories: the case of nonword repetition

Tests of nonword repetition (NWR) have often been used to examine children's phonological knowledge and word learning abilities. However, theories of NWR primarily explain performance either in terms of phonological working memory or long‐term knowledge, with little consideration of how these processes interact. One theoretical account that focuses specifically on the interaction between short‐term and long‐term memory is the chunking hypothesis. Chunking occurs because of repeated exposure to meaningful stimulus items, resulting in the items becoming grouped (or chunked); once chunked, the items can be represented in short‐term memory using one chunk rather than one chunk per item. We tested several predictions of the chunking hypothesis by presenting 5–6‐year‐old children with three tests of NWR that were either high, medium, or low in wordlikeness. The results did not show strong support for the chunking hypothesis, suggesting that chunking fails to fully explain children's NWR behavior. However, simulations using a computational implementation of chunking (namely CLASSIC, or Chunking Lexical And Sub‐lexical Sequences In Children) show that, when the linguistic input to 5–6‐year‐old children is estimated in a reasonable way, the children's data are matched across all three NWR tests. These results have three implications for the field: (a) a chunking account can explain key NWR phenomena in 5–6‐year‐old children; (b) tests of chunking accounts require a detailed specification both of the chunking mechanism itself and of the input on which the chunking mechanism operates; and (c) verbal theories emphasizing the role of long‐term knowledge (such as chunking) are not precise enough to make detailed predictions about experimental data, but computational implementations of the theories can bridge the gap.     

Stress, glucocorticoids, and memory: a meta-analytic review

Although a strong psychoneuroendocrine linkage exists between stress, glucocorticoids and memory, the relationship is not always straightforward. Eighty-eight effect sizes and 1642 participants from 28 studies were meta-analyzed for the effects of stress on memory performance and glucocorticoid activation. Analyses showed that stress was associated with glucocorticoid activation and declarative memory decline. In animal studies, predator stress affected memory performance more than physical stress. In human studies, males showed higher cortisol levels than females in response to stress. Further, the correlation between cortisol levels and memory deficits was stronger in studies using laboratory stressors than those examining long term effects of chronic exposure to rising basal levels of glucocorticoids and chronic life stressors. It was concluded that, although the relationship between stress, glucocorticoids, and memory loss was empirically supported, there were other factors, such as stress condition and gender, as well as individual differences within groups, that influenced the association between these variables, and warrant further examination.     

Attachment‐related expectations and mother‐referent memory bias in middle childhood

Understanding the cognitive processing of attachment‐relevant information has become a major focus of attachment research. Previous research demonstrated links between attachment and memory for attachment‐related information, but results were contradictory and did not control for mood‐effects. The current study aimed to provide a conceptual framework to capture inconsistencies. A straightforward memory bias hypothesis was derived and tested. Fifty children (aged 10–12) completed questionnaires assessing confidence in maternal support and depressive symptoms, and a memory task in which they recalled positive and negative words that referred to previous interactions with mother. Less confidence in maternal support and more depressive symptoms were linked to a more negative mother‐related memory bias. The effect of confidence in maternal support remained marginally significant when controlling for depressive symptoms, explaining the initial effect of depressive symptoms. These findings support attachment theory's hypothesis that attachment‐relevant information is processed in an attachment expectation‐congruent way.     

不同认知偏好对大学生情感反应的影响：短期利益和长期代价

对99名大学生进行一个学期的追踪调查,探讨不同认知偏好对他们状态性情感反应的影响以及这种影响从长期看是利是弊的问题。结果发现：1）与其他组被试相比,积极认知偏好组产生了更少消极情感反应和更高情感反应积极性;2）认知偏好对个体情感反应的不同影响是暂时的,从长期看,既没有累积成稳定的情感健康差异也没有产生情感代价。最后对认知偏好的适应性进行了讨论。     

Hidden talents in harsh conditions? A preregistered study of memory and reasoning about social dominance

Although growing up in stressful conditions can undermine mental abilities, people in harsh environments may develop intact, or even enhanced, social and cognitive abilities for solving problems in high‐adversity contexts (i.e. ‘hidden talents’). We examine whether childhood and current exposure to violence are associated with memory (number of learning rounds needed to memorize relations between items) and reasoning performance (accuracy in deducing a novel relation) on transitive inference tasks involving both violence‐relevant and violence‐neutral social information (social dominance vs. chronological age). We hypothesized that individuals who had more exposure to violence would perform better than individuals with less exposure on the social dominance task. We tested this hypothesis in a preregistered study in 100 Dutch college students and 99 Dutch community participants. We found that more exposure to violence was associated with lower overall memory performance, but not with reasoning performance. However, the main effects of current (but not childhood) exposure to violence on memory were qualified by significant interaction effects. More current exposure to neighborhood violence was associated with worse memory for age relations, but not with memory for dominance relations. By contrast, more current personal involvement in violence was associated with better memory for dominance relations, but not with memory for age relations. These results suggest incomplete transfer of learning and memory abilities across contents. This pattern of results, which supports a combination of deficits and ‘hidden talents,’ is striking in relation to the broader developmental literature, which has nearly exclusively reported deficits in people from harsh conditions. A video abstract of this article can be viewed at: https://youtu.be/e4ePmSzZsuc .     

The effect of cognitive reappraisal on long‐term emotional experience and emotional memory

One's ability to properly regulate emotion is critical to psychological and physical well‐being. Among various strategies to regulate emotion, cognitive reappraisal has been shown to modulate both emotional experience and emotional memory. However, most studies of reappraisal have focused on reappraisal of negative situations, with reappraisal of positive emotion receiving considerably less attention. In addition, the effects of reappraisal on emotional reactions to stimuli are typically only assessed either immediately or after a short delay, and it remains unclear whether reappraisal effects persist over longer time periods. We investigated the effect of cognitive reappraisal on emotional reactions and long‐term episodic memory for positive and negative stimuli. Men and women viewed emotionally negative, positive, and neutral pictures while they were instructed to either increase, decrease, or maintain the initial emotional reactions elicited by the pictures. Subjective ratings of emotional valence and arousal were assessed during the regulation task and again after 1 week. Memory for the pictures was assessed with free recall. Results indicated that pictures accompanied by instructions to increase emotion were better recalled than pictures reappraised to decrease emotion. Modulation of emotional arousal elicited by stimuli persisted over a week, but this effect was observed only for men. These findings suggest that cognitive reappraisal can have long‐lasting effects on emotional reactions to stimuli. However, the sex differences observed for the effects of reappraisal on emotional reactions highlight the importance of considering individual differences in the effects of regulation.     

简化的联合再认范式中情绪对错误记忆影响的年龄差异

以康奈尔情绪DRM词表为主要实验材料, 使用简化的联合再认范式(DRM范式的变式), 结合多项式加工树建模的统计手段, 对34名年轻人(23 ± 2岁)和28名老年人(68 ± 5岁)的再认记忆进行比较, 以考察不同年龄组中情绪效价对错误记忆的作用机制。结果发现材料的情绪效价对错误记忆的影响存在显著年龄差异：(1) 积极情绪能够有效降低老年人的错误记忆, 其作用机制为积极情绪增强了老年人的字面痕迹而减弱了要点痕迹提取; (2) 消极情绪能够有效地降低年轻人的错误记忆, 其作用机制为消极情绪使年轻人反应偏向降低, 但不影响其记忆痕迹的提取。结果表明, 简化的联合再认范式下, 情绪效价对错误记忆的效应存在明显的年龄差异：老年人表现出积极情绪降低错误记忆的积极偏向; 年轻人表现出消极情绪降低错误记忆的消极偏向; 情绪效应对错误记忆的认知机制存在年龄差异。     

How can a stereotype inconsistency bias be encouraged in communication?

This study aimed to investigate what conditions can lead to a bias for communicating stereotype inconsistent (SI) information, relative to stereotype consistent (SC) information. Sixty‐three undergraduate university students (22 males, 41 females; M_age = 21.25) read a story about an Arab man who exhibited characteristics consistent and inconsistent with the stereotype of Arab men. The story was transmitted through 21 three‐person communication chains; each participant rewrote the story from memory for the next person in the chain to read, with only the first participant in each chain reading the original story. As hypothesized, when a surprising category conjunction was formed by pairing the primary stereotype (Arab men) with a secondary stereotype of a contradictory nature (kindergarten teachers), SC information was circulated less than SI information. This was also the case when a causal explanation was provided that accounted for the unexpected SI information. Findings indicate the potential of techniques that elicit cognitive elaboration of SI information to encourage an SI bias in communication, and show promise for exploring ways to reduce the impact of negative stereotypical information in the long term.     

Arousal,valence, and memory for detail

A common finding in the emotion‐memory literature is that memory is enhanced for positively arousing stimuli and negatively arousing stimuli relative to neutral stimuli. We tested the notion that post‐stimulus elaboration is responsible for these effects. Post‐stimulus elaboration refers to the process of thinking about an event (after its offset) more frequently or more in‐depth. We tested the hypothesis by presenting participants with 36 slides depicting events that varied in arousal (low and high) and valence (positive and negative). The opportunity for elaboration was manipulated by requiring participants, during the inter‐slide interval, to complete addition problems, simply view the addition problems, or view a blank slide. Cued recall memory was tested for central and background details. Based on the post‐stimulus elaboration hypothesis it was expected that the greatest memory decline would occur for the central details of negatively and positively arousing slides when participants were required to complete addition problems (i.e., a distractor task × arousal × detail interaction). Contrary to the hypothesis, we found that filling the inter‐slide interval with a distractor task decreased memory for negative stimuli compared to positive stimuli. This effect was independent of arousal. We also found that arousal increased central detail memory for positive and negative stimuli and background detail memory for positive stimuli but not for negative stimuli. This interaction was explained on the basis of pre‐attentive encoding and cue utilisation. It was concluded that in order to understand the complex relationship between emotion and memory, future studies should include, as a minimum, the variables of valence, arousal, and detail.     

Recall bias for stimulus and response anxiety words in spider phobics

Abstract

Experiments on memory bias in patients with anxiety disorders have produced inconsistent results. It is suggested that results may depend on whether the words studied relate to anxiety-inducing stimulus features or to the anxiety response. It was predicted, following previous results, that phobic subjects would show diminished recall of stimulus words, but that recall of response words might be enhanced. In fact, for both stimulus and response words, phobics showed better recall of phobia-related words than of control words. The results are consistent with the hypothesis that phobic anxiety is associated with a bias towards recall of phobia-related words. However, it seems likely that phobic anxiety has several potentially conflicting effects on recall, and that this accounts for the inconsistent results in literature.     

Trade-offs in visual attention and the enhancement of memory specificity for positive and negative emotional stimuli

Emotional influences on memory can lead to trade-offs in memory for gist or detail and trade-offs in memory for central or peripheral aspects of an event. Attentional narrowing has often been proposed as a theoretical explanation for this pattern of findings with negative emotion. These trade-offs have been less extensively investigated with positive emotion. In three experiments, we investigate memory for specific visual details of positive and negative stimuli, examine central–peripheral trade-offs in memory, and assess the hypothesis that attentional narrowing contributes to emotional enhancement of memory specificity. We found that memory for details was enhanced by negative and positive emotion. Central–peripheral trade-offs were found in memory for negative emotional stimuli but not in memory for positive emotional stimuli. These trade-offs with negative emotion were associated with attentional narrowing at the time of encoding, as measured by eye movements. There were no attentional effects at the time of encoding found with positive emotional stimuli. Evidence was found for the attentional narrowing hypothesis of memory specificity and central–peripheral trade-offs in memory for negative emotional events. Alternative explanations for the positive emotional enhancement of memory specificity are required.     

Exposure to violent video games and aggression in German adolescents: a longitudinal analysis

The relationship between exposure to violent electronic games and aggressive cognitions and behavior was examined in a longitudinal study. A total of 295 German adolescents completed the measures of violent video game usage, endorsement of aggressive norms, hostile attribution bias, and physical as well as indirect/relational aggression cross‐sectionally, and a subsample of N=143 was measured again 30 months later. Cross‐sectional results at T1 showed a direct relationship between violent game usage and aggressive norms, and an indirect link to hostile attribution bias through aggressive norms. In combination, exposure to game violence, normative beliefs, and hostile attribution bias predicted physical and indirect/relational aggression. Longitudinal analyses using path analysis showed that violence exposure at T1 predicted physical (but not indirect/relational) aggression 30 months later, whereas aggression at T1 was unrelated to later video game use. Exposure to violent games at T1 influenced physical (but not indirect/relational) aggression at T2 via an increase of aggressive norms and hostile attribution bias. The findings are discussed in relation to social‐cognitive explanations of long‐term effects of media violence on aggression. Aggr. Behav. 35:75–89, 2009. © 2008 Wiley‐Liss, Inc.     

Effects of long-term exposure to violent and sexually degrading depictions of women

In this study we investigated the effects of emotional desensitization to films of violence against women and the effects of sexually degrading explicit and nonexplicit films on beliefs about rape and the sexual objectification of women. Male subjects viewed either two or five R-rated violent "slasher," X-rated nonviolent "pornographic," or R-rated nonviolent teenage-oriented ("teen sex") films. Affective reactions and cognitive perceptions were measured after each exposure. Later, these men and no-exposure control subjects completed a voir dire questionnaire, viewed a reenacted acquaintance or nonacquaintance sexual assault trial, and judged the defendant and alleged rape victim. Subjects in the violent condition became less anxious and depressed and showed declines in negative affective responses. They were also less sympathetic to the victim and less empathetic toward rape victims in general. However, longer film exposure was necessary to affect general empathy. There were no differences in response between the R-rated teen sex film and the X-rated, sexually explicit, nonviolent film, and the no-exposure control conditions on the objectification or the rape trial variables. A model of desensitization to media violence and the carryover to decision making about victims is proposed.     

Good Enough for an Affair. Self‐Enhancement of Attractiveness,Interest in Potential Mates and Popularity as a Mate

Using data from the Berlin Speed Dating Study, we tested rival hypotheses concerning the effects of self‐enhancement of attractiveness on dating outcomes. Three hundred eighty‐two participants took part in one of the 17 speed‐dating sessions. After each speed‐dating interaction, participants indicated how interesting they found the respective person as a long‐term and short‐term partner. Using social relations analyses, we computed perceiver effects (being more or less choosy) and target effects (being rated as more or less interesting) of long‐term and short‐term partner ratings. Self‐enhancement was operationalized as the discrepancy between self‐rated attractiveness and four components of actual attractiveness (observer‐rated facial and vocal attractiveness, height and body mass index). Results indicated that self‐enhancers were less choosy with respect to their interest for short‐term partners, which was especially true for men, but more choosy with respect to long‐term partners. With regard to popularity as a mate, potential partners indicated that they found self‐enhancers more interesting as short‐term partners but not as long‐term partners. As self‐enhancement is a key component of narcissism, these results are consistent with findings that narcissists perceive many sexual affairs as an achievement, while preferring selected ‘trophy’ long‐term partners, and narcissists have a charming appeal for short‐term, but not lasting, social relationships. Copyright © 2015 European Association of Personality Psychology     

Nap‐dependent learning in infants

Sleep has been shown to aid a variety of learning and memory processes in adults ( Stickgold, 2005 ). Recently, we showed that infants’ learning also benefits from subsequent sleep such that infants who nap are able to abstract the general grammatical pattern of a briefly presented artificial language ( Gomez, Bootzin & Nadel, 2006 ). In the present study, we demonstrate, for the first time, long‐term effects of sleep on memory for an artificial language. Fifteen‐month‐old infants who had napped within 4 hours of language exposure remembered the general grammatical pattern of the language 24 hours later. In contrast, infants who had not napped shortly after being familiarized with the language showed no evidence of remembering anything about the language. Our findings support the view that infants’ frequent napping plays an essential role in establishing long‐term memory.     

Remembering the silver lining: Reappraisal and positive bias in memory for emotion

Reappraisal and distraction, unlike suppression, are known to decrease the intensity of negative emotion in the short term. Little is known about long-term characteristics associated with emotion regulation strategies, however. In a longitudinal study, we examined the relation between the strategies people reported using to regulate emotions during a stressful situation and their later memory for their emotions. Students in Italy rated the intensity of positive and negative emotions they were experiencing as they prepared for their high school exit exam. They also rated the extent to which they were regulating emotion using reappraisal, distraction, and suppression. Six weeks later, students recalled their pre-exam emotions. The more students reported engaging in reappraisal before the exam, the more they overestimated positive emotion and underestimated negative emotion when recalling their experience. The association between reported reappraisal and memory bias was partially mediated by positive changes over time in students’ appraisals of the exam preparation experience. Reports of engaging in distraction and suppression were not associated with memory bias. Because remembered emotion guides future choices, these findings suggest that reappraisal is a highly adaptive strategy for coping with stressful situations, not only in the short run, but also in the long run.