Lessons for future research: two experiments failed to reproduce a relationship between achievement motivation and autobiographical memory distortion

ABSTRACT

Previous research (Sharman & Calacouris, 2010. Motivated imagination inflation: Implicit and explicit motives predict imagination inflation for achievement and affiliation events. Experimental Psychology, 57, 77–82) found that participants’ achievement-motivation was associated with the inflation of memory and confidence for unlikely achievement-related events in childhood. Similarly, other research has shown correlations between achievement motivation and grade inflation. In the current studies, we experimentally investigate the effect of false feedback and achievement-motivation on memory distortion for an unlikely childhood event (e.g. inventing an important device). In Experiment 1, we found that false feedback did have an effect, but contrary to previous research, self-reported achievement-motivation was not a statistically significant correlate of memory distortion. In Experiment 2, we again found a main effect for false feedback, no main effect of motivation, and an interaction. Both Experiments did not find, as earlier research had, a significant relationship between achievement-motivation and achievement-related memory distortion. We suggest others use different methods to ours when attempting to demonstrate a causal relationship between motivation and false memories.     

The effects of repeatedly recalling a traumatic event on eyewitness memory and suggestibility

ABSTRACT

The aims of this study were to examine the effects of repeatedly recalling a traumatic event on recall performance and eyewitness suggestibility. We also investigated whether these effects were moderated by the type of details recalled and the completeness of retrieval. Participants watched a video depicting a fatal car accident and were randomly allocated to one of four conditions in which they: (1) repeatedly recalled the traumatic (central) details of the event only (trauma-focused); (2) repeatedly recalled the non-traumatic (peripheral) details of the event only (non-trauma focused); (3) repeatedly recalled the entire video (complete); or (4) did not recall the video at all (no-recall control). Results indicated that repeated complete recall was beneficial for memory retention of the entire traumatic event and that, in general, trauma-related (central) post-event information (PEI) was less likely to be reported than trauma-unrelated (peripheral) PEI. It was also found that repeated trauma-focused recall increased trauma-related confabulations. These results not only illustrate the value of repeated complete recall to best preserve the integrity of eyewitness memory, but, perhaps more critically, warn of the dangers of repeatedly questioning witnesses specifically about the central or traumatic details of an event.     

Who is susceptible in three false memory tasks?

ABSTRACT

Decades of research show that people are susceptible to developing false memories. But if they do so in one task, are they likely to do so in a different one? The answer: “No”. In the current research, a large number of participants took part in three well-established false memory paradigms (a misinformation task, the Deese-Roediger-McDermott [DRM] list learning paradigm, and an imagination inflation exercise) as well as completed several individual difference measures. Results indicate that many correlations between false memory variables in all three inter-paradigm comparisons are null, though some small, positive, significant correlations emerged. Moreover, very few individual difference variables significantly correlated with false memories, and any significant correlations were rather small. It seems likely, therefore, that there is no false memory “trait”. In other words, no one type of person seems especially prone, or especially resilient, to the ubiquity of memory distortion.     

Change Blindness and Eyewitness Testimony

The authors explored the relevance of research on change blindness to eyewitness identification and testimony under intentional and incidental memory conditions. Participants (N = 80, 40 men and 40 women) viewed a video enactment of a burglary in which the identity of the burglar changed at the halfway point of the film. Half of participants were briefed to remember the content, and the other half were not. All were tested for the recall of the content, awareness of the change, and ability to identify either or both of the burglars. Some 61% of participants did not notice the identity change. Rates of detection were significantly higher in participants in the intentional condition, who also recalled significantly more detail from the film. Awareness of change was also significantly related to content recall scores and accuracy of identification of both burglars. The results illustrate the interrelation between the eyewitness and change blindness literatures.     

Exaggeration in memory: Systematic distortion of self-evaluative information under reduced accessibility

The tendency to exaggerate specific information about oneself can stem from reconstructive memory processes that are distinct from motivated self-enhancement or self-presentation. While exaggerations sometimes reflect these motives, they also result from attempts to reconstruct one’s past. Three studies examined test scores as they became less accessible in memory. Study 1 provided a real-world illustration, demonstrating reduced accessibility and increased exaggeration of SAT scores over time. Two experiments utilized test scores randomly assigned in a controlled laboratory setting. Increased exaggeration was observed following distraction (Study 2), and after a one-week delay (Study 3). Distortions in scores reported were consistent with beliefs about the self, rather than uniformly self-serving. Under reduced accessibility, exaggeration was predicted by beliefs about achievement (Study 1) and subjective perceptions of test performance (Study 2). Study 3 manipulated perceived performance. Positive performance feedback caused greater exaggeration under reduced accessibility, whereas negative feedback reduced the tendency to exaggerate.     

目击证人研究

目击证人的证词对维持司法系统公正的重要性使得对目击证人的研究成为当今法律心理学和司法领域的热点之一。目击证人的错误证词是导致锗判案件的最常见原因。警方在询问、队列辨认与照片识别中的特定程序和行为,目击证人的记忆、年龄、性别、种族、自信程度等．都将影响证词的准确性。     

Information distortion in self-other decision making

In both organizational and social arenas, individuals make decisions for themselves and for other individuals. But research in decision making has provided little input into whether or how these decisions are psychologically different. In this paper, I propose that decisions—depending on whom they are for—vary according to the extent of information distortion, such that, individuals who choose for themselves demonstrate more postdecisional distortion, yet less predecisional distortion than individuals who choose on behalf of others. To test this hypothesis, participants in an experiment made a decision between two restaurants. Attributes about each restaurant were presented sequentially, and preferences were measured following each attribute. As expected, participants who chose for themselves experienced more postdecisional distortion. However, among participants who chose on behalf of others, greater distortion of predecisional attribute information was observed. These findings shed light on the differences in self-other decision making, as well as on research concerning information distortion.     

Eyewitness Memory and Metamemory in Product Identification: Evidence for Familiarity Biases

Research on the reliability of eyewitness memory for criminal events has been extensively studied, but eyewitness memory in civil cases has not. However, many of these civil cases revolve around eyewitness memory for events that transpired decades ago. We have developed a paradigm with which to study memory for specific product brand identification, a common question in civil cases involving product liability. Participants were asked to follow recipes and were then given surprise memory tests on the specific brands of products used. In addition, they were asked to report their subjective confidence for each response. Memory and performance was poor after even a brief delay, as was metamemory accuracy: Confidence regarding brand name recall was a poor indicator of accuracy. Participants also displayed a strong familiarity bias. They frequently reported using familiar, common brands, when no such products were actually used. This was especially true at longer delays, after which false identification of familiar products was twice as common as correct responses.     

Duration of cats' (Felis catus) working memory for disappearing objects

This study explored the duration of cats' working memory for hidden objects. Twenty-four cats were equally divided into four groups, which differed according to the type of visual cues displayed on and/or around the hiding boxes. During eight sessions, the four groups of cats were trained to locate a desirable object hidden behind one of the four boxes placed in front of them. Then, the cats were tested with retention intervals of 0, 10, 30 and 60 s. Results revealed no significant differences between the groups during training or testing. In testing, the cats' accuracy to locate the hidden object rapidly declined between 0 and 30 s but remained higher than chance with delays of up to 60 s. The analysis of errors also indicated that the cats searched as a function of the proximity of the target box and were not subjected to intertrial proactive interference. This experiment reveals that the duration of cats' working memory for disappearing objects is limited and the visual cues displayed on and/or around the boxes do not help the cats to memorize a hiding position. In discussion, we explore why the duration of cats' working memory for disappearing objects rapidly declined and compare these finding with those from domestic dogs. The irrelevance of visual cues displayed on and around the hiding boxes on cats' retention capacity is also discussed.     

Commitment to a developing preference and predecisional distortion of information

People tend to distort their evaluation of decision-relevant information in favor of the currently preferred alternative. We test whether this predecisional distortion of information is amplified by increased commitment to that current preference. We manipulated commitment, without changing the preferred option’s content, by requiring participants to indicate their preference either by circling or by darkening a sizable box (cf. feature-positive effect). Experiment 1 revealed that the effort to darken substantially increased predecisional distortion. Experiment 2 ruled out elaboration as an explanation for the effect of darkening. Experiment 3 showed that, among participants who attributed the darkening effort to an external source, predecisional distortion decreased when the source was believed to summon effort. These findings suggest that the developing commitment to a tentatively preferred alternative is one driver of predecisional distortion.     

Misleading cues improve developmental assessment of working memory capacity: The color matching tasks

The theory of constructive operators was used as a framework to design two versions of a paradigm (color matching task, CMT) in which items are parametrically ordered in difficulty, and differ only contextually. Items in CMT-Balloon are facilitating, whereas items in CMT-Clown contain misleading cues. Participants of ages 7–14 years and adults (N = 149) were studied. We found significant model-predicted graded differences in performance between the facilitating and misleading tasks, across and within age groups, expressing age versus items’ demand interactions. Younger children were differentially affected by contextual cues. Even though both task versions were highly correlated with a well-established developmental measure of attentional capacity, CMT-Clown, which contained misleading cues, was a better measure of working memory capacity. These results show a need to estimate degree of misleadingness whenever performance levels in working memory or mental attention tasks are compared and interpreted. Developmental profiles of both tasks are discussed in terms of contextual differences and neoPiagetian stages of development.     

Effects of prior knowledge and response bias upon recognition memory for a story: Implications for children's eyewitness testimony

Abstract: The present study was designed to evaluate the integration hypothesis and the response bias hypothesis for explaining the fragility of children's eyewitness memory, by varying the plausibility of postevent information and the strength of response bias in recognition tests. Preschool children were told a story in which a boy named Ken saw a housebreaker stealing various objects and the postevent information was also incorporated into the story. The first recognition test was administered immediately following the presentation of an interpolated story, and the second recognition test was administered 10 weeks later. The results indicated that high-plausibility objects tended to be recognized as the stolen objects in the second recognition test, and that recognition accuracy was higher for a new-distractor condition than for a misleading-distractor condition. These findings were interpreted as suggesting that the memory representation of the story might be changed through the integration processes and/or rendered inaccessible in terms of the response bias.     

FOK与情节记忆、语义记忆和内隐记忆关系的研究

实验采用R/K判断和PDP测量技术,研究了FOK判断与情节记忆、语义记忆和内隐记忆关系及其监测强度.实验结果表明FOK判断的准确性程度为R判断＞K判断,即对情节记忆监测的准确性要大于对语义记忆监测的准确性.FOK对于自动加工的预测准确性差异不显著,说明FOK监测对内隐记忆的作用是微弱的,由此推测无记忆是意识最高层面的活动.对记忆监测水平强度是由意识--无意识逐渐减弱的.FOK判断对意识性水平较高的记忆活动监测的准确性较强.