Value Priorities and Organ Donation in Young Adults

This research identifies major personal values among American university students that predict organ-donation registration with the Department of Motor Vehicles. Participants responded to a factual test of their knowledge about organ donation, indicated whether or not they had registered as posthumous donors, and filled out a personality inventory measuring their personal values (Schwartz, 1992, 1994). The data indicated a high level of factual knowledge about organ donation; and the greater the level of knowledge, the more likely participants were registered to donate their organs. Also, participants higher in benevolence, universalism, achievement, and stimulation were more likely to have registered to donate their organs. The results are discussed in terms of the need to develop more effective health-communication campaigns by using specific health-education messages tailored to students majoring in different disciplines or to people in various occupations as a means of increasing their willingness to donate.     

Effects of Testimonial Inconsistencies and Witness Group Identity on Mock‐Juror Judgments1

We examined the interaction of testimonial consistency and witness group identity on mock jurors' judgments of witness effectiveness, probability that the defendant committed the crime, and verdict. In a 3 × 2 (Witness Group Identity × Testimonial Consistency) between‐groups design, 180 mock jurors heard a trial of a person charged with assault. Although both variables affected judgments, group‐identity effects were weak when testimony was characterized by inconsistencies, and they were stronger when testimony was internally consistent but ambiguous. The judgment patterns were consistent with predictions from Chaiken, Liberman, and Eagly's (1989) heuristic‐systematic processing theory, suggesting that heuristic processing would bias systematic processing when the evidence was not decisive.     

Variation in working memory capacity and cognitive control: goal maintenance and microadjustments of control

Variation in working memory capacity (WMC) and cognitive control was examined in four experiments. In the experiments high- and low-WMC individuals performed a choice reaction time task (Experiment 1), a version of the antisaccade task (Experiment 2), a version of the Stroop task (Experiment 3), and an arrow version of the flanker task (Experiment 4). An examination of response time distributions suggested that high- and low-WMC individuals primarily differed in the slowest responses in each experiment, consistent with the notion that WMC is related to active maintenance abilities. Examination of two indicators of microadjustments of control (posterror slowing and conflict adaptation effects) suggested no differences between high- and low-WMC individuals. Collectively these results suggest that variation in WMC is related to some, but not all, cognitive control operations. The results are interpreted within the executive attention theory of WMC.     

Using confidence ratings to identify a target among foils

Sauer, Brewer, and Weber (2008) advanced a novel procedure for testing eyewitness recognition memory. Rather than providing a single decision (i.e., identifying a lineup member or rejecting the lineup as a whole), participants rated their confidence that each lineup member was the culprit. Classification algorithms determined when patterns of confidence ratings indicated suspect guilt or innocence. Across varied test stimuli, confidence-based classifications equalled or out-performed single decisions. However, Sauer et al.’s classification criteria were designed to optimize performance for the data to which they were applied. If effective classification using confidence ratings requires such idiosyncratic criteria, the applied utility of the confidence procedure is nil. We re-analysed the data from Sauer et al.’s two identification experiments and demonstrated that confidence-based classification performance exceeding that of a traditional lineup task did not depend on uniquely developed classification criteria. Confidence-rating lineups offer a potentially promising alternative to procedures requiring single decisions from witnesses.     

An observation on the spontaneous noticing of prospective memory event-based cues

In event-based prospective memory, current theories make differing predictions as to whether intention-related material can be spontaneously noticed (i.e., noticed without relying on preparatory attentional processes). In 2 experiments, participants formed an intention that was contextually associated to the final phase of the experiment, and lures that overlapped to differing degrees with the features of the intention-related cues were embedded in the initial phase. When participants were outside of the appropriate responding context (i.e., the initial phase), they exhibited slower latencies to lures that exactly matched the features of their intention compared with other types of lures and control words. In addition, on a final remember/know recognition test, participants reported having greater subjective recollection for the occurrence of the exact-match lures. These results suggest that exact-match lures were spontaneously noticed and differentially processed in the absence of any observable preparatory attentional processes. The findings have implications for the theoretical debate over whether preparatory attention must always be relied upon to notice intention-related material.     

Global social identity and global cooperation

This research examined the question of whether the psychology of social identity can motivate cooperation in the context of a global collective. Our data came from a multinational study of choice behavior in a multilevel public-goods dilemma conducted among samples drawn from the general populations of the United States, Italy, Russia, Argentina, South Africa, and Iran. Results demonstrate that an inclusive social identification with the world community is a meaningful psychological construct that plays a role in motivating cooperation that transcends parochial interests. Self-reported identification with the world as a whole predicts behavioral contributions to a global public good beyond what is predicted from expectations about what other people are likely to contribute. Furthermore, global social identification is conceptually distinct from general attitudes about global issues, and has unique effects on cooperative behavior.     

On the role of imagery in event-based prospective memory

The role of imagery in encoding event-based prospective memories has yet to be fully clarified. Herein, it is argued that imagery augments a cue-to-context association that supports event-based prospective memory performance. By this account, imagery encoding not only improves prospective memory performance but also reduces interference to intention-related information that occurs outside of context. In the current study, when lure words occurred outside of the appropriate responding context, the use of imagery encoding strategies resulted in less interference when compared with a standard event-based intention condition. This difference was eliminated when participants were not given a specific context to associate their intention (i.e., lures occurred within the appropriate responding context). These results support a cue-to-context association account of how imagery operates in certain event-based prospective memory tasks.     

Paranormal Encounters as Eyewitness Phenomena: Psychological Determinants of Atypical Perceptual Interpretations

Many people who report paranormal sightings (e.g., Bigfoot and UFO aliens) are apparently sincere. This places many such sightings in the category of eyewitness errors, rather than of deliberate deception. Recent research has supported this idea; in an earlier paper, we demonstrated that paranormal beliefs are facilitated by tendencies toward attention deficit hyperactive disorder, dissociation, and depression. These characteristics predicted specific patterns of beliefs in several paranormal phenomena. The present research addressed the question of whether such psychological tendencies would tend to create bias in perception and interpretation as well as in belief- in whether a person’s identification of a given stimulus as paranormal in nature would be influenced by the same factors previously demonstrated to influence paranormal beliefs. This hypothesis was supported. Specifically, those with dissociative tendencies were significantly more likely to identify given stimulus items as paranormal in nature than were those with lower dissociation scores. Dissociation was further shown to be related to paranormal beliefs, consistent with earlier findings. Results are discussed in terms of the reconfigurative dynamics known to operate in areas of human cognition such as eyewitness identification, and in terms of the generality of those effects to the realm of paranormal sightings.     

Postidentification feedback affects subsequent eyewitness identification performance

Eyewitnesses sometimes view more than one lineup during an investigation. We investigated the effects of postidentification feedback following one lineup on responses to a second lineup. Witnesses (N=621) viewed a mock crime and, later, attempted to identify the culprit from an initial (target-absent) lineup and a second (target-present or target-absent) lineup. Prior to viewing the second lineup, some witnesses received accurate feedback stating that the initial lineup did not contain the culprit. A compound-decision, signal detection approach allowed the effects of feedback on identification responses to be described in terms of differences in discriminability and response bias. For witnesses who made an incorrect foil identification from the initial lineup, feedback (vs. no feedback) was associated with poorer discriminability on the second test. For witnesses who correctly rejected the initial lineup, feedback (vs. no feedback) was associated with greater discriminability on the second test. Only witnesses who received feedback after an initial correct rejection performed at a level comparable with a single-lineup control group, suggesting that an initial identification test can impair, but not enhance, performance on a second test involving the same culprit. From a theoretical perspective, the results are consistent with the idea that the way people use memorial information when making memory decisions is flexible. Analyses of preidentification confidence ratings, obtained in a follow-up study (N=133), suggested that the effects of feedback on identification performance may have operated via differences in witnesses' metacognitive beliefs.     

The reading ability of good and poor temporal processors among a group of college students

In this study, we examined whether good auditory and good visual temporal processors were better than their poor counterparts on certain reading measures. Various visual and auditory temporal tasks were administered to 105 undergraduates. They read some phonologically regular pseudowords and irregular words that were presented sequentially in the same ("word" condition) and in different ("line" condition) locations. Results indicated that auditory temporal acuity was more relevant to reading, whereas visual temporal acuity was more relevant to spelling. Good auditory temporal processors did not have the advantage in processing pseudowords, even though pseudoword reading correlated significantly with auditory temporal processing. These results suggested that some higher cognitive or phonological processes mediated the relationship between auditory temporal processing and pseudoword reading. Good visual temporal processors did not have the advantage in processing irregular words. They also did not process the line condition more accurately than the word condition. The discrepancy might be attributed to the use of normal adults and the unnatural reading situation that did not fully capture the function of the visual temporal processes. The distributions of auditory and visual temporal processing abilities were co-occurring to some degree, but they maintained considerable independence. There was also a lack of a relationship between the type and severity of reading deficits and the type and number of temporal deficits.