Attempting to avoid false memories in the Deese/Roediger—McDermott paradigm: Assessing the combined influence of practice and warnings in young and old adults

On each of five study-test trials, young and old adults attempted to memorize the same list of 60 words (e.g., bed, rest, awake), which were blocked according to their convergence on four corresponding associates. Half of the participants in each age group were given an explicit warning about the DRM paradigm prior to encoding and were asked to attempt to avoid recalling any associated but nonpresented words (e.g., sleep). Lists were presented auditorily at either a fast (1,250 msec/word) or a slow (2,500 msec/word) rate. Without a warning, the probability of veridical recall across trials increased for both age groups; however, the probability of false recall across trials decreased only for young adults. When a warning about false recall was provided, young adults virtually eliminated false recall by the second trial. Even though old adults also used warnings to reduce false recall on Trial 1, they were still unable to decrease false memories across the remaining four study-test trials. Old adults also reduced false recall more with slow than with fast presentation rates. Taken together, these findings suggest that old adults have a breakdown in spontaneous, self-initiated source monitoring as reflected by little change in false recall across study-test trials but a preserved ability to use experimenter-provided warnings or slow presentation rates to reduce false memories.     

The Bermond-Vorst Alexithymia Questionnaire: a measurement invariance examination among U.S. Anglos and U.S. Hispanics

The aim of this article is to assess the measurement invariance of the Bermond-Vorst Alexithymia Questionnaire (BVAQ) in U.S. Anglo (n = 490) and U.S. Hispanic ( n = 379) samples of college students. The BVAQ items demonstrated invariance of the factor loadings, the latent item intercepts, and unique factor variances. However, Hispanics had higher verbalizing scores and lower fantasizing scores on the latent variables. As a whole, the BVAQ requires additional testing and/or refinement for use with a Hispanic sample. Until such refinements, the authors recommend that the Toronto Alexithymia Scale-20 be used with U.S. Hispanic samples.     

Mindfulness in Iran and the United States: Cross-Cultural Structural Complexity and Parallel Relationships with Psychological Adjustment

In theory, mindfulness has a role to play in resolving intercultural conflicts. This suggestion rests upon the relatively untested presumption that mindfulness operates similarly across cultures. In a test of this presumption, university students from two countries that are often in conflict at the governmental level, Iran (N = 723) and the United States (N = 900), responded to the Mindful Attention Awareness Scale (Brown and Ryan Journal of Personality and Social Psychology 84(4):822–848, 2003), along with an array of other psychological measures. This Mindfulness Scale displayed structural complexities in both societies, but a measurement invariant subscale was nevertheless identified. Similar cross-cultural evidence of concurrent validity was obtained in relationships with wide-ranging measures of adjustment. Nonsignificant linkages with Public Self-Consciousness and Self-Monitoring demonstrated discriminant validity in both societies. These data identified mindfulness as a cross-culturally similar psychological process that could plausibly have a role in resolving intercultural conflicts.     

Smoking motivation: A factor-analytical study

Factor analyses were carried out on the responses of 115 cigarette smokers to the Smoking Questionnaire of Russell et al. (1974), to the Situational Smoking Questionnaire of Frith (1971) and to certain items of a biographical smoking questionnaire. In the analysis of Russell's questionnaire, a set of six factors was extracted, bearing some resemblance to the six factors found by the authors of the questionnaire, although the matching of factors was by no means perfect. However, the results did support Russell et al.'s finding of a major dimension of degree of dependence upon cigarettes, together with an orthogonal factor contrasting pharmacological with non-pharmacological dependence. The analysis of the Situational Smoking Questionnaire confirmed Frith's finding that the first principal component represented a general desire for cigarettes while the second contrasted desire to smoke in high- and low-arousal inducing (or stressful and relaxing) situations; and these two components corresponded fairly well with the first two components extracted from Russell's questionnaire, pharmacological dependence being associated with smoking in stressful situations.     

Effects of Acute Stress or Centrally Injected Interleukin-1beta on Neuropeptide Expression in the Immune System

Acute stress stimulates the expression and release of corticotropin-releasing hormone (CRH) and arginine vasopressin (AVP) from the hypothalamus, and the pro-opiomelanocortin products beta-endorphin and ACTH from the anterior pituitary. These neuropeptides are also expressed in immune tissues, and it has been proposed that they may modulate immune responses to stress through paracrine mechanisms. We subjected rats to restraint stress or central injection of interleukin (IL)-1beta to determine whether these acute stimuli can alter the expression of neuropeptides in the spleen and thymus. Restraint stress significantly increased the contents of all these neuropeptides in thymic, but not splenic, extracts. A single icv injection of IL-1beta increased contents of CRH, AVP, ACTH and beta-endorphin in the spleens of both sham-operated and adrenalectomised (ADX) rats. IL-1beta increased thymic contents of CRH and ACTH in sham-operated rats but these increases were not observed in ADX rats. These results suggest that the effects of IL-1beta on neuropeptide expression in the spleen are independent of glucocorticoids, whereas IL-1beta stimulation of neuropeptide expression in the thymus is dependent on circulating glucocorticoids. There were significant correlations between increases in CRH, ACTH and beta-endorphin in the spleen, and between CRH and ACTH in the thymus, consistent with the suggestion that IL-1beta-induced increases in ACTH and beta-endorphin may be mediated through CRH. These results provide evidence that stressors can directly influence neuropeptide expression in immune tissues. Thus stress may influence immune functions through paracrine mechanisms involving locally synthesised neuropeptides as well as through activation of the hypothalamo-pituitary-adrenal axis.     

Visual marking and visual change

Five experiments investigated the types of changes that disrupt the preview effect--the benefit gained in difficult search tasks from presenting some distractors earlier in time. A shape change with or without an overall luminance change at the location of an old item was found to disrupt the preview effect, whereas an equivalent luminance change alone or an isoluminant color change was not disruptive. Results suggest that (a) relatively low-level visual changes may not be sufficient to abolish the benefit, (b) the benefit most likely occurs through inhibition applied to locations within a location master map, and (c) inhibition need not be applied to surface features of objects.     

The dynamics of intention retrieval and coordination of action in event-based prospective memory

Event-based prospective memory requires responding to cues in the environment that are associated with a previously established intention. Some researchers believe that intentions reside in memory with an above baseline level of activation, a phenomenon called the intention superiority effect. The authors of this study predicted that intention superiority would be masked by additional cognitive processes associated with successful event-based prospective memory. These additional processes include noticing the cue, retrieving the intention, and coordinating intention execution with the ongoing activity. In 3 experiments, intention superiority was demonstrated by faster latencies to the ongoing activity on failed prospective trials and the existence of the additional processes was demonstrated by slower latencies on successful trials. This study demonstrates the importance of investigating the microstructure of the cognitive components involved with processing and responding to an event-based prospective memory cue.     

Aging and visual marking: selective deficits for moving stimuli

The selective processing of new visual information can be facilitated by the top-down inhibition of old stimuli already in the visual field, a capacity-limited process termed visual marking (D. G. Watson & G. W. Humphreys, 1997). Three experiments assessed the effects of aging on visual marking using stationary (Experiment 1) and moving (Experiments 2 and 3) items. For young participants, visual marking was observed in all experiments. For older participants, visual marking was observed only with stationary items. The results are not consistent with any simple account of general age-related decrements and provide further support for the deployment of different methods of visual marking depending on the properties of the old items and the current task demands.     

Psychiatric patient- and informant-reported personality: predicting concurrent and future behavior

The authors investigated the criterion and incremental validity of personality reports from psychiatric patients and knowledgeable informants in predicting patient substance use, social and risky behaviors, and psychological distress. Patient and informant reports of patient personality and behavior were collected from an adult psychiatric sample (N = 94). Hierarchical regressions indicated that patient reports of personality accounted for significant variance in both concurrent (17%-42%) and future behavior assessed 1 year later (17%-40%). Informant reports contributed significantly to the prediction of several behaviors and most strongly to social behaviors. Behaviors were predicted equally well by self-reports and informant reports in prospective as in concurrent regressions. Thus, both patient and informant reports of personality contribute importantly to prediction of behavior, and predictive ability is stable across time.