Women outperform men in remembering to remember

The study of gender differences in prospective memory (i.e., remembering to remember) has received modest attention in the literature. The few reported studies investigating either subjective or objective evaluations of prospective memory have shown inconsistent data. In this study, we aimed to verify the presence of gender differences during the performance of an objective prospective memory test by considering the weight of specific variables such as length of delay, type of response, and type of cue. We submitted a sample of 100 healthy Italian participants (50 men and 50 women) to a test expressly developed to assess prospective memory: The Memory for Intentions Screening Test. Women performed better than men in remembering to do an event-based task (i.e., prompted by an external event) and when the task required a physical response modality. We discuss the behavioural differences that emerged by considering the possible role of sociological, biological, neuroanatomical, and methodological variables.     

The cost of remembering to remember in event-based prospective memory: investigating the capacity demands of delayed intention performance

Prospective memory tasks are often accomplished during the performance of other activities. Despite the dual-task nature of prospective memory, little attention has been paid to how successful prospective memory performance affects ongoing activities. In the first 2 experiments, participants performing an embedded prospective memory task had longer response times on nonprospective memory target trials of a lexical decision task than participants performing the lexical decision task alone. In the prospective memory groups, longer lexical decision response times were associated with better prospective memory performance (Experiments 1, 2, and 3), a pattern not demonstrated with an embedded retrospective memory task (Experiment 2). The results of Experiment 3 suggest that the retrieval of a delayed intention, or the prospective component, can require capacity.     

Directed remembering: Subliminal cues alter nonconscious memory strategies

Much research on memory function has focused on changes in recognition performance brought about by differences in the processes engaged during encoding. In most of this work, participants either receive explicit instructions to remember particular items or they perform orienting (i.e., encoding) tasks that support different levels of memory performance. In daily life, however, the retention or dismissal of information often occurs without conscious intent, thereby suggesting an alternative, nonconscious route through which purposive remembering and forgetting can occur. Based on this line of reasoning, we speculated that recognition performance in a standard item-based forgetting paradigm may be moderated by subliminal cues that trigger the automatic activation of different mnemonic strategies. We report the results of two experiments that supported this prediction. In each experiment, the basic item-based forgetting effect was replicated, but via the subliminal presentation of “remember” and “forget” cues. In addition, cue-dependent differences in memory performance were traced to the operation of a covert rehearsal mechanism during encoding. We consider the implications of these findings for the non-conscious operation of memory processes in everyday life.     

Directed remembering: subliminal cues alter nonconscious memory strategies

Much research on memory function has focused on changes in recognition performance brought about by differences in the processes engaged during encoding. In most of this work, participants either receive explicit instructions to remember particular items or they perform orienting (i.e., encoding) tasks that support different levels of memory performance. In daily life, however, the retention or dismissal of information often occurs without conscious intent, thereby suggesting an alternative, nonconscious route through which purposive remembering and forgetting can occur. Based on this line of reasoning, we speculated that recognition performance in a standard item-based forgetting paradigm may be moderated by subliminal cues that trigger the automatic activation of different mnemonic strategies. We report the results of two experiments that supported this prediction. In each experiment, the basic item-based forgetting effect was replicated, but via the subliminal presentation of "remember" and "forget" cues. In addition, cue-dependent differences in memory performance were traced to the operation of a covert rehearsal mechanism during encoding. We consider the implications of these findings for the non-conscious#10; operation of memory processes in everyday life.     

The cost in remembering of ruminating on negative memories

This study investigated retrieval mechanisms that may be involved in memory for distressing stimuli. Forty-one nonclinical participants watched a video clip depicting the immediate aftermath of a serious car accident. Following this, half of the participants were instructed to focus attention on the victims of the accident and to consider the negative sequelae of their injuries. The remaining participants were not given any instructions. Following the Victim Focus/Control period, all participants completed a cued-recall task assessing their memory of the video clip. Overall, victim-related details were better recalled than nonvictim related details. It is important to note that participants in the Victim Focus condition retrieved fewer peripheral details than participants in the Control condition. These results suggest that people focusing attention on distressing aspects of an event can experience a cost in remembering other aspects of the event. These findings may be interpreted in terms of enhanced recollection of central events or retrieval-induced forgetting mechanisms to explain patterns of diminished memory for aspects of distressing events.     

Resistance to the influences of others: Limits to the formation of a collective memory through conversational remembering

People often form collective memories by sharing their memories with others. Warnings about the reliability of one conversational participant can limit the extent to which conversations or other forms of postevent information can influence subsequent memory. Although this attenuation is consistently found for prewarnings, there are substantial reasons to suspect that, by carefully manipulating both individual characteristics of the listener in a conversation and the dynamics of the postevent conversation, one can restrict the effect even prewarnings have on the influence a speaker might have on the memory of a listener. Indeed, in situations in which a speaker contributes substantially to a conversation and the quality of memory of a listener is poor, prewarnings have the paradoxical effect of increasing the influence of the speaker on a listener's memory. Warnings may not always limit the formation of a collective memory. Copyright © 2009 John Wiley & Sons, Ltd.     

Emotional valence influences the neural correlates associated with remembering and knowing

In the present study, we examined whether emotional valence modulates the neural processes that are engaged during the encoding of information that is later vividly remembered versus that which is only known to be familiar. Participants underwent an fMRI scan while viewing positive, negative, and neutral stimuli. Later, recognized items were labeled as either remembered or known. Negative items that were later vividly remembered recruited temporo-occipital regions associated with sensory processing more than did positive or neutral items that were vividly remembered. The encoding of positive information later known recruited the cingulate gyrus and bilateral frontal and parietal areas—regions associated with episodic and semantic retrieval and self-referential processing—more than did the encoding of negative or neutral items that were later known. These results suggest that memories for negative items may be vividly recollected due to increased sensory processing during encoding, whereas enhanced gist-based processing of positive information may lead to increased feelings of familiarity.     

The DRD4 VNTR polymorphism influences reactivity to smoking cues

Recent research has indicated that craving for tobacco can be reliably elicited by exposure to smoking cues, suggesting that cue-elicited craving for tobacco may be a useful phenotype for research on genetic factors related to nicotine dependence. Given the potential role of dopamine in cue-elicited craving, the authors examined whether the DRD4 VNTR polymorphism is associated with cue-elicited craving for tobacco. Participants who were homozygous or heterozygous for the 7 repeat (or longer) allele were classified as DRD4 L, and all other participants were classified as DRD4 S. Participants were exposed to smoking cues before smoking either high-nicotine cigarettes or control cigarettes. Analyses suggested that participants in the L group demonstrated significantly greater craving, more arousal, less positive affect, and more attention to the smoking cues than did the participants in the S group.     

Body position differentially influences responses to exogenous and endogenous cues

The influence of vestibular inputs on exogenous (Exp. 1) and endogenous (Exp. 2) orienting of visual attention was examined. The vestibular system was manipulated through a change in static body position. Participants engaged in an exogenous or endogenous response task while in a seated position, while lying in a prone position, and while in a prone position with their head down and neck flexed (HDNF). An attenuation of inhibition and facilitation effects during the exogenous task was observed in the HDNF position. However, responses to the cues remained similar in the endogenous task, irrespective of body position. The results reveal a potential dissociation between reflexive and volitional orienting of visual attention that is dependent on vestibular inputs.     

Social influences on remembering: Intellectual,interpersonal and intergroup components

When people recall an event collaboratively we may expect the product to be influenced by the combined cognitive resources of the group, interpersonal acquaintance of the members, and social competition engendered by salient intergroup considerations. Using undergraduate students and serving police officers as subjects, a range of experimental conditions was established which varied on the three factors of cognitive resources of the participants (Cognitive Resources), interpersonal acquaintance of the participants (Interpersonal Acquaintance) and professional salience (Professional Salience) of the recall material. Participants answered a questionnaire concerning a police interrogation they had witnessed, and rated how much confidence they had in their answers. Multiple regression revealed statistically significant associations between (i) Cognitive Resources and number of correct answers, (ii) Interpersonal Acquaintance and confidence for implicational errors, and (iii) Professional Salience and (a) number of implicational errors and (b) confidence in confusional errors. The theoretical implications for our understanding of memory as a social process are discussed, and the practical implications for courtroom testimony briefly described.     

Two routes to remembering (and another to remembering not)

In this article, the author presents evidence about 2 mechanisms of remembering that occur when target stimuli are presented in meaningful contexts. One occurs when the context has been seen previously; the other occurs when the context is new in the test. Both appear to result from the construction of expectations and evaluation of outcomes, but the former appears to depend on the formation of definite expectations, whereas the latter appears to depend on indefinite expectations. These 2 routes to remembering are affected by different factors and cause dissociated patterns of remembering. They also have differential significance for claims of clear recall versus a feeling of familiarity. The results are discussed in terms of the SCAPE framework of memory.     

Dynamic orientation cues decrease the viewpoint cost of mental rotation

Mental rotation, as a covert simulation of motor rotation, could benefit from spatial updating of object representations. We are interested in what kind of visual cue could trigger spatial updating. Three experiments were conducted to examine the effect of dynamic and static orientation cues on mental rotation, using a sequential matching task with three-dimensional novel objects presented in different views. Experiment 1 showed that a rotating orientation cue with constant speed reduced viewpoint costs in mental rotation. Experiment 2 extended this effect with a varied-speed rotating orientation cue. However, no such benefit was observed with a static orientation cue in Experiment 3. These findings indicated that a visually continuous orientation cue is sufficient to elicit spatial updating in mental rotation. Furthermore, there may be differences in the underlying mechanisms of spatial updating on the basis of constant-speed rotating cues and varied-speed rotating cues.     

Top-down influences make saccades deviate away: the case of endogenous cues

We tested a recent hypothesis suggesting that the eye deviates away from a location when top-down preparation can influence target selection. Participants had to make an eye movement to a peripheral target. Before the upcoming target, a central cue indicated the likely target location. Results show that when the target was presented at a location different from that indicated by the cue, eye movements to the target deviated away from the cued location. Because central cues are under top-down control, the present results are in line with a determining role of top-down preparation on saccade direction. These results contrast with the findings reported in a similar paradigm executed with hand movements, in which the movements were mostly initiated in the direction of the cued location. Therefore, we conclude that inhibitory effects typically observed when executing eye movements may not be observed when executing hand movements in similar conditions.     

Idea habitats: how the prevalence of environmental cues influences the success of ideas

We investigate 1 factor that influences the success of ideas or cultural representations by proposing that they have a habitat, that is, a set of environmental cues that encourages people to recall and transmit them. We test 2 hypotheses: (a) fluctuation: the success of an idea will vary over time with fluctuations in its habitat, and (b) competition: ideas with more prevalent habitats will be more successful. Four studies use subject ratings and data from newspapers to provide correlational support for our 2 hypotheses, with a negative factoid, positive rumor, catchphrases, and variants of a proverb. Three additional experimental studies manipulate the topic of actual conversations and find empirical support for our theory, with catchphrases, proverbs, and slang. The discussion examines how habitat prevalence applies to a more extensive class of ideas and suggests how habitats may influence the process by which ideas evolve.     

Motion influences gaze direction discrimination and disambiguates contradictory luminance cues

In two experiments, we investigated the role of apparent motion in discriminating left/right gaze deviation judgments. We demonstrated that discrimination accuracy and response confidence was significantly higher when the eyes were moved to the left or right, compared to when the eyes were presented in their final shifted position (static images). To dissociate the role of motion signals from luminance signals, gaze stimuli were also presented in reverse contrast. Replicating past studies polarity reversal had a profound and detrimental effect on gaze discrimination in static images, although, intriguingly, while response confidence remained low, participant performance improved as gaze angle increased. In striking contrast to these data, polarity reversal had no negative effect on performance when the eyes were moved. We discuss these findings in the context of a multiple-cue account of gaze perception.     

听觉线索与个体差异对音乐紧张感加工的影响

音乐无他, 张弛而已。音乐紧张感架起了客观音响与主观体验之间的桥梁, 是音乐情绪产生的前提和基础。音乐紧张感加工的影响因素主要来自客体与主体两方面。研究发现, 声学要素与调性结构是影响音乐紧张感诱发的声音线索, 而文化背景与音乐能力是影响听者对紧张感加工的个体因素。未来需要对时间结构与长时程调性结构诱发的紧张感及其机制进行深入探究, 这将有助于深化我们对音乐紧张感与情绪加工的认识。     

Conscious and unconscious influences on remembering information from the near and distant past: A developmental analysis

We examined adults' memory for the actors and actresses who won Academy Awards for their performances in specific motion pictures between 1992 to 1937. Fifty-six individuals between 41 to 81 years of age completed inclusion and exclusion versions of aMovie Memory Questionnaire in which they were required to identify actors and actresses who were paired with the names of movies they actually appeared in (e.g., Cher—Moonstruck) or they never appeared in (e.g., Robert DeNiro—Annie Hall), respectively. Estimates of the independent contributions of conscious and unconscious influences on recollection were obtained by analyzing subjects' performance on the inclusion and exclusion tasks via Jacoby's (1991)Process Dissociation Procedure. Results indicated that conscious recollection for motion picture information exhibited a typical retention function, whereas unconscious contributions to recollection remained relatively constant over the entire time range that was sampled. When age differences were considered, it was found that young-old participants displayed a higher level of conscious recollection than did middle-age and old-old adults. The role played by unconscious processes in recollection, however, did not vary by age group.     

The cost of callousness: regulating compassion influences the moral self-concept

It has often been argued that compassion is fundamental to morality. Yet people often suppress compassion for self-interested reasons. We provide evidence that suppressing compassion is not cost free, as it creates dissonance between a person's moral identity and his or her moral principles. We instructed separate groups of participants to regulate their compassion, regulate their feelings of distress, or freely experience emotions toward compassion--inducing images. Participants then reported how central morality was to their identities and how much they believed that moral rules should always be followed. Participants who regulated compassion-but not those who regulated distress or experienced emotions--showed a dissonance-based trade-off. If they reported higher levels of moral identity, they had a greater belief that moral rules could be broken. If they maintained their belief that moral rules should always be followed, they sacrificed their moral identity. Regulating compassion thus has a cost of its own: It forces trade-offs within a person's moral self-concept.