Comparing Older and Younger Adults in an Event-Based Prospective Memory Paradigm Containing an Output Monitoring Component

ABSTRACT

Two experiments with younger and older adults were conducted to investigate the output-monitoring component of event-based prospective memory. In the standard form of the task, participants must remember to press a key when a certain class of items is encountered. To evaluate output monitoring, event-based cues were repeated and participants were asked to press a different key if they could remember that an earlier response was made to a particular cue. Younger adults forgot fewer of their successful responses, but displayed a distinct bias to claim that they had responded earlier when actually they had forgotten to respond. By contrast, older adults displayed this bias much less frequently. Elaborated responding to cues had the effect of improving the performance of younger, but not older adults. The results are discussed in terms of natural repetitions and omission errors that might be made in everyday prospective memory tasks.     

Bilateral Reminiscence in Inverted-Reversed Printing

Reported is a study of bilateral reminiscence in printing inverted-reversed alphabetic letters. Independent variables were the printing-Hand Sequence (left-to-right vs. right-to-left), and the Interpolated Activity (control vs. upright reading vs. inverted reading). These variables were factorially combined in a 2 × 3 design with 30 Ss per cell. On second-hand performance, the upright groups were found to be superior to the combined inverted and control groups under both sequence conditions. However, the inverted group was superior to the control group only in the left-to-right condition and not in the right-to-left condition. This latter result was discussed as possibly being due to the specialization of the cerebral hemispheres for certain types of processing activities. Implications of this hypothesis were pointed out for further research, and for possible mechanisms producing reactive inhibition in the central nervous system.     

Religious Doubt and Spiritual Growth Among Adults Bereaved of a Grandparent

Religious beliefs and bereavement provide contexts for personal growth (Benore & Park, 2004). The death of a grandparent may be especially well-suited to prompt such growth. Using data from 164 adults, ages 18 to 51 years, bereaved of a grandparent, the authors examined whether religious doubt relates to current grief via perceived spiritual growth. Mediation analyses showed that fewer religious doubts were associated with spiritual growth in bereavement, but spiritual growth was associated with higher levels of current grief. Results are discussed within a framework for including family processes in bereavement research that includes religious doubt and spiritual growth.     

Output monitoring tests reveal false memories of memories that never existed

Three experiments were conducted to assess participants' beliefs about potential false memories that might have occurred during free recall tests. An input–output monitoring test was administered that required participants to discriminate between items that were studied and recalled, studied and not recalled, or were entirely new. Critical lures from Roediger and McDermott's (1995) paradigm were inserted into this test. The results demonstrated that participants believed erroneously recalled items were both studied and recalled. The intriguing finding was that unrecalled items were believed to have been studied approximately 80% of the time, and half of those were also believed to have been recalled. This result represents a dual false memory effect in which items were believed to have been studied and also to have been recalled. The ramifications of this new procedure are discussed in terms of proposed experiments that might clarify the genesis of these false memories.     

Course of Antisocial Behavior during Emerging Adulthood: Developmental Differences in Personality

Despite similar normative changes in antisocial behavior (AB) and traits of disinhibition and negative emotionality during "emerging adulthood," few studies have tested if there are developmental differences in personality over this period for distinct courses of AB. In a college cohort assessed at ages 18 and 25, we examined if mean-level changes on traits from the Tridimensional Personality Questionnaire varied by course of AB. Compared to persisters, those who desisted in AB from 18 to 25 exhibited a larger decrease on novelty seeking and larger increase on reward dependence. A significant mean-level decline was observed for harm avoidance, but was unrelated to AB course. Findings support theories of the co-development of personality and AB during emerging adulthood.     

Comparisons of women with high and low trait impulsivity using behavioral models of response-disinhibition and reward-choice

Two types of behavioral models of impulsive behavior, response-disinhibition/attentional and reward-choice response models, were used to compare women grouped by high (Impulse+, n=43) and low (Impulse−, n=43) self-reported impulsive behavior on the Eysenck I₇ Questionnaire. Two of the four different tasks tested were response-disinhibition/attentional models; these included the Immediate and Delayed Memory Task and the GoStop Task. The other two tasks were based on the reward-choice model of impulsivity and included the Single Key Impulsivity Paradigm and the Two-Choice Reward Task. Of particular interest was whether commission errors (response-disinhibition/attentional paradigms) or a preference for smaller–sooner rewards over larger–later rewards (reward-choice) would differ between the groups. Participants completed one session of each task in a single day. The most significant findings were that the Impulse+ group had: (1) elevated commission errors; (2) lower stimulus discriminability (between target and catch stimuli); and (3) poorer response inhibition to a stop signal. Responding on the response-disinhibition/attentional tasks distinguished between the impulsivity groups while the reward-choice tasks did not. These results demonstrate that women who report higher levels of trait impulsivity respond in a manner consistent with previous studies examining impulsive behavior.     

Everyday Problem Solving: Experience, Strategies, and Behavioral Intentions

Experience and strategic flexibility predict performance on solving hypothetical everyday problems, although their relation to real-world behavior is largely unknown (e.g., M. Diehl, S. L. Willis, & K. W. Schaie, 1995). Moreover, few studies have examined highly salient, rare-event problems such as relocation decisions. This study tested whether experience and strategic flexibility, in addition to demographic variables, were related to intentions to relocate. Ninety-five adults (M age = 72.1 years) completed problem-solving vignettes, provided information regarding previous experience with problems related to living arrangements, and stated personal relocation intentions. Logistic regression analyses showed that both experience (Odds Ratio (OR) = 40.6) and the number of strategies generated (OR= 3.0) were significantly associated with an increased likelihood of considering a late-life relocation. The benefits of linking lab-based assessments of everyday problem solving to real-world behavior are discussed.     

An observation on the role of context variability in free recall

The authors conducted 3 experiments investigating the effect of context variability and word frequency on free recall. Context variability refers to the number of pre-experimental contexts in which a given word is experienced. Both between-subjects and within-subjects manipulations of context variability demonstrated a distinct advantage for low context variability words. Standard word frequency effects were obtained in 2 of the 3 experiments, but the common finding of no word frequency differences in mixed lists of high and low word frequency may depend on the level (low vs. high) of context variability. The authors speculate that the advantage for low context variability items may accrue from better item-to-list context associations or better storage of contextual information as a consequence of the smaller pre-experimental contextual fan that these items possess.     

Estimating facets of psychopathy from normal personality traits: a step toward community epidemiological investigations

In three samples consisting of community and undergraduate men and women and incarcerated men, we examined the criterion validity of two distinct factors of psychopathy embodied in the Psychopathic Personality Inventory (PPI) as indexed by primary trait scales from the Multidimensional Personality Questionnaire (MPQ). Consistent with the PPI factors themselves, MPQ-estimated PPI-I related negatively with internalizing disorder symptoms and fearfulness and positively with thrill and adventure seeking, sociability, activity, and narcissism. MPQ-estimated PPI-II was associated negatively with socialization and positively with externalizing disorder symptoms, impulsivity, disinhibition and boredom susceptibility, and trait anxiety and negative emotionality. Additionally, PPI-I was selectively related to the interpersonal facet of Factor 1 of the Psychopathy Checklist-Revised (PCL-R), whereas PPI-II was related preferentially to Factor 2 of the PCL-R.     

Focused attention on one contextual attribute does not reduce source memory for a different attribute

In three experiments, participants were asked to learn a particular contextual dimension of a study episode for a later memory test. The hypothesis being evaluated was that focused attention towards learning a particular source-specifying attribute would decrease memory for a different attribute dimension. Although source memory for the attribute dimensions in the focus of attention were generally improved, memory was not diminished for contextual attributes ostensibly outside the focus of primary attention. The absence of any decrease in memory appears to be a somewhat general phenomenon because it was found with external-external, internal-external, and internal-internal combinations of attribute dimensions. The results may be most consistent with a model of cognitive processing in which people have separate pools of attentional resources rather than a single pool of general resources.