Four dimensions of self-defining memories (specificity, meaning, content, and affect) and their relationships to self-restraint, distress, and repressive defensiveness

This study examines four dimensions of self-defining memory (specificity, meaning, content, and affect) and their relationship to self-restraint, distress, and defensiveness. The development and validation of a protocol for measuring specificity, meaning, and affect in self-defining memories is discussed. Specificity is operationalized as the temporal and detailed specificity of the narrative. Meaning refers to the participant's stepping back from the narrative to derive higher personal meaning or a life lesson. Affect reflects subjective emotion upon recall. Agreement between two raters scoring 1040 memories was kappa=.83 for specificity and kappa=.72 for meaning. The protocol is compatible with Thorne and McLean's scoring system for content (the types of events in memories). The current study compared individual differences in the four dimensions of 10 self-defining memories collected from 103 undergraduates to scores of self-restraint, distress, and repressive defensiveness, as measured by the Weinberger Adjustment Inventory. Memory specificity was inversely related to repressive defensiveness, while greater memory meaning was linked to moderate and high levels of self-restraint. Memory content and affect predicted individuals' degree of subjective distress. Based on these findings, the authors discuss the place of self-defining memories in Conway and Pleydell-Pearce's Self-Memory System model of autobiographical memory and personality, more generally.     

Evidence for detection of one duration sample and default responding to other duration samples by pigeons may result from an artifact of retention-test ambiguity

S. C. Gaitan and J. T. Wixted (2000) proposed that when pigeons are trained on a conditional discrimination to associate 1 duration sample with 1 comparison and 2 other duration samples with a 2nd comparison, they detect only the single duration, and on trials involving either of the 2 other duration samples, they respond to the other comparison by default. In 2 experiments, the authors show instead that pigeons lend to treat the retention intervals (such as those used by Gaitan and Wixted) as intertrial intervals, and thus, they tend to treat all trials with a delay as 0-s sample trials. The authors tested this hypothesis by showing that divergent retention functions do not appear when the retention interval is discriminably different from the intertrial interval.     

The fate of cognition in very old age: six-year longitudinal findings in the Berlin Aging Study (BASE)

The authors report full-information longitudinal age gradients in 4 intellectual abilities on the basis of 6-year longitudinal changes in 132 individuals (mean age at T1 = 78.27, age range = 70-100) from the Berlin Aging Study. Relative to the cross-sectional parent sample (N = 516, mean age at T1 = 84.92 years), this sample was positively selected because of differential mortality and experimental attrition. Perceptual speed, memory, and fluency declined with age. In contrast, knowledge remained stable up to age 90, with evidence for decline thereafter. Age gradients were more negative in old old (n = 66, mean age at T1 = 83.04) than in old (n = 66, mean age at T1 = 73.77) participants. Rates of decline did not differ reliably between men and women or between participants with high versus low life-history status. They conclude that intellectual development after age 70 varies by distance to death, age, and intellectual ability domain.     

Psychometric properties of the Dominic interactive assessment: a computerized self-report for children

The reliability and validity of the Dominic Interactive (DI) assessment were evaluated. The DI is a computerized self-report measure for children, which assesses symptom presence for seven DSM-IV diagnoses. The participants were 322 children (169 cocaine exposed, 153 non-cocaine exposed) who were recruited at birth for a prospective longitudinal study. At 6 years of age, measures of self-report, parent report, and observational data were collected. Moderate to excellent internal consistencies on the DI were found for the total sample as well as for subsamples based on cocaine status and gender. Concurrent validity correlations between DI scales and the Child Behavior Checklist, Affect in Play Scale, a modified Conners's Teachers Rating Scale, and the Parenting Stress Index were examined. Significant relationships among scales were more apt to be among comparisons that assessed externalizing behaviors. Overall, low correlations were obtained, which are comparable to other studies that evaluate agreement between child and parent report of behaviors.     

Differences in familiarity according to the cognitive reserve of healthy elderly people / Diferencias en familiaridad en función de la reserva cognitiva en ancianos sanos

Abstract

This study examines the relationship between cognitive reserve and familiarity processes in recognition memory. We hypothesize that people with high cognitive reserve are able to better compensate in alternative information retrieval processes. Forty-five participants, divided into high and low cognitive reserve groups, conducted a recognition experiment where they were asked to discriminate between studied and non-studied words that varied in perceptual familiarity. The results indicated that participants were able to use perceptual familiarity to improve their level of recognition. More importantly, people with high cognitive reserve used familiarity better than those with low cognitive reserve. The results provide the first empirical evidence indicating that people with high cognitive reserve are more efficient at balancing recollection and familiarity processes, and thus maintain a better performance level than those with low cognitive reserve.     

Muscular Fatigue and the Learning and Performance of a Motor Control Task

Four groups of 12 female college students performed a pursuit-rotor task during learning under one of four conditions of exercising the muscles of the limb used in the task: (a) no muscular exercise, (b) low-fatiguing, (c) medium-fatiguing, and (d) high-fatiguing muscular exercise. All four groups were tested 48 hr later on the same pursuit-rotor task with no exercise interpolated between the ten 20-sec trials. Differences in the performances among the four groups were not statistically significant on either the first or the second day alone or when the data of the two days were combined. The data appear to support the hypothesis of an inverted-U or inverted-J model relating performance (and learning) to muscular fatigue in motor-control tasks.     

Quiet Eye Duration,Expertise, and Task Complexity in Near and Far Aiming Tasks

Skilled (n = 12) and less skilled (n = 12) billiards players participated in 2 experiments in which the relationship between quiet eye duration, expertise, and task complexity was examined in a near and a far aiming task. Quiet eye was defined as the final fixation on the target prior to the initiation of movement. In Experiment 1, skilled performers exhibited longer fixations on the target (quiet eye) during the preparation phase of the action than their less skilled counterparts did. Quiet eye duration increased as a function of shot difficulty and was proportionally longer on successful than on unsuccessful shots for both groups of participants. In Experiment 2, participants executed shots under 3 different time-constrained conditions in which quiet eye periods were experimentally manipulated. Shorter quiet eye periods resulted in poorer performance, irrespective of participant skill level. The authors argue that quiet eye duration represents a critical period for movement programming in the aiming response.