Directed Forgetting and Aging: The Role of Retrieval Processes,Processing Speed,and Proactive Interference

ABSTRACT

The directed forgetting effect obtained with the item method is supposed to depend on both selective rehearsal of to-be-remembered (TBR) items and attentional inhibition of to-be-forgotten (TBF) items. In this study, we investigated the locus of the directed forgetting deficit in older adults by exploring the influence of recollection and familiarity-based retrieval processes on age-related differences in directed forgetting. Moreover, we explored the influence of processing speed, short-term memory capacity, thought suppression tendencies, and sensitivity to proactive interference on performance. The results indicated that older adults' directed forgetting difficulties are due to decreased recollection of TBR items, associated with increased automatic retrieval of TBF items. Moreover, processing speed and proactive interference appeared to be responsible for the decreased recall of TBR items.     

The power of well-connected arguments: early sensitivity to the connective because

Connectives, such as because, are routinely used by parents when addressing their children, yet we do not know to what extent children are sensitive to their use. Given children's early developing abilities to evaluate testimony and produce arguments containing connectives, it was hypothesized that young children would show an appropriate reaction to the presence of connectives. Three experiments were conducted to test this hypothesis. In each, two informants gave contradicting statements regarding the location of an object and justified their positions by using a similar argument. Only one of the informants used the connective because to link his argument to the statement. In each experiment, the 3-year-olds performed at chance in selecting choices containing the connective because, but the 4- and 5-year-olds performed above chance. Moreover, in Experiments 2 and 3, the 4-year-olds, 5-year-olds, and adults performed significantly better than the 3-year-olds. These findings show that 4-year-olds, 5-year-olds, and adults are sensitive to the presence of connectives. An interpretation of the difference in performance between the 3-year-olds and the 4- and 5-year-olds in terms of metarepresentational skills is suggested.     

Understanding the executive functioning heterogeneity in schizophrenia

Schizophrenia is characterized by heterogeneous brain abnormalities involving cerebral regions implied in the executive functioning. The dysexecutive syndrome is one of the most prominent and functionally cognitive features of schizophrenia. Nevertheless, it is not clear to what extend executive deficits are heterogeneous in schizophrenia patients. Furthermore, it is still unknown if the executive impairments observed in schizophrenia are better characterized as specific or as reflecting generalized cognitive factors. The four executive processes (i.e. updating, inhibition, shifting and divided attention) described in Miyake et al.'s (2000) theoretical model were examined in 62 individuals with schizophrenia and 49 healthy controls. At group level, impairments in all four executive processes confirmed the marked impairment in executive functioning in patients with schizophrenia. Statistical analysis indicated that executive performances in schizophrenia patients were more heterogeneous than in healthy controls. Compared with standardized norms, 94% of patients exhibited impairment in at least one of the executive tasks. Twenty-one percent of patients exhibited impairment in one executive task, 27% in two tasks, 23% in three executive tasks and 23% exhibited impairments in the four executive tasks. Six percent of patients had normal executive profile. Regression analysis indicated that only premorbid intellectual quotient and a general slowing in processing speed predicted the executive dysfunction severity. Executive functioning was not affected by age, duration of illness, psychotic status, or by antipsychotic dosage. Our results emphasize the heterogeneity of the dysexecutive syndrome in schizophrenia when individual profile analysis is considered, and extend the view that individual cognitive differences in schizophrenia are largely underlined by general cognitive factors such as intellectual level and general processing speed.     

Success modulates consolidation of a visuomotor adaptation task

Consolidation is a time-dependent process that is responsible for the storage of information in long-term memory. As such, it plays a crucial role in motor learning. Prior research suggests that some consolidation processes are triggered only when the learner experiences some success during practice. In the present study, we tested whether consolidation processes depend on the objective performance of the learner or on the learner's subjective evaluation of his or her own performance (i.e., how successful the learner believes he or she is). Four groups of participants performed 2 sessions of a visuomotor adaptation task for which they had to learn a new internal model of limb kinematics; these sessions were either 5 min or 24 hr apart. The task was identical for all participants, but each group was given a difficult or an easy objective that affected the participants' evaluation of their own performance during the initial practice session. All groups adapted their movements similarly to the rotation of the visual feedback during the first session. However, when retested the following day, participants who had a 24-hr rest interval and had initially experienced success performed significantly better than those who did not feel successful or who were given a 5-min rest interval. Our results indicate that a certain level of subjective success must be experienced to trigger certain consolidation processes.     

Configural instability of data from the Life Orientation Test—Revised

Scores obtained with the Revised Life Orientation Test (LOT-R) are commonly interpreted according to the optimism–pessimism factorial model. Positive items would measure individual differences in positive outcome expectancy, and negative items would measure differences in negative outcome expectancy. Configural stability was assessed using four datasets from French adults, N₁ = 429, N₂ = 278, N₃ = 468, and N₄ = 909. Two times out of four the third positive item-variable could also be regressed on the pessimism factor, with a significant improvement of the goodness of fit. Moreover, the semantic content of the best items reveals that the positive vs. negative outcome expectancy interpretation of the factors was not self-consistent. Practical consequences for the use of the usual optimism composite score are discussed.     

Mentalization in children and mothers in the context of trauma: An initial study of the validity of the Child Reflective Functioning Scale

This study examined the validity of the Child Reflective Functioning Scale (CRFS: Ensink, Target, & Oandason, 2013, Child reflective functioning scale scoring manual: for application to the Child Attachment Interview. London, UK: Anna Freud Centre – University College London), a measure designed to assess reflective functioning (RF) or mentalization during middle childhood. Participants were 94 mother–child dyads divided into two subgroups; 46 dyads where children had histories of intrafamilial (n = 22 dyads) or extrafamilial (n = 24 dyads) sexual abuse, and a community control group composed of 48 mother–child dyads. RF of children and their mothers was assessed using videotaped and transcribed data gathered using the Child Attachment Interview and the Parent Development Interview (PDI: Slade, Aber, Bresi, Berger, & Kaplan, 2004, The parent development interview‐Revised. New York, NY: The City University of New York). The findings indicate that the CRFS proved reliable, with excellent intraclass correlation coefficients for general RF, as well as RF regarding self and others. Significant differences in RF were found between sexually abused children and the control group, and also between children who had experienced intrafamilial and extrafamilial sexual abuse. This provides support for the discriminant validity of the CRFS. Furthermore, maternal RF was associated with child RF. Both abuse and maternal RF made significant contributions to predicting children's RF regarding themselves, but child sexual abuse was the only variable that made a significant contribution to explaining variance in children's RF regarding others.     

ATTRIBUTIONS,COMPLEXITÉ ATTRIBUTIONNELLE ET SATISFACTION CONJUGALE*

The present study investigates the relation among attributions, attributional complexity, and marital satisfaction. More specifically, we examine the value of attributional complexity as a possible moderator in the relationship between attributions and marital satisfaction. Seventy-four French Canadian couples completed the Marital Attributional Style Questionnaire, the Conflict Rating Scale, the Attributional Complexity Scale, and the Dyadic Adjustement Scale. The results corroborate the existence of a relationship between attributions and marital satisfaction. Against predictions, attributional complexity does not seem to moderate the relation between attributional style and marital satisfaction. The theoretical implications of these findings are discussed.     

Visual search asymmetry for viewing direction

In visual search experiments, we examined the existence of a search asymmetry for the direction with which three-dimensional objects are viewed. It was found that an upward-tilted target object among downward-tilted distracting objects was detected faster than when the orientation of target and distractors was reversed. This indicates that the early visual process regards objects tilted downward with respect to the observer as the situation that is more likely to be encountered. That is, the system is set up to expect to see the tops of these objects. We also found a visual field anisotropy, in that the asymmetry was more pronounced in the lower visual field. These findings are consistent with the idea that the tops of objects are usually situated in the lower visual field and less often in the upper field. Examination of the conditions under which the asymmetry and the anisotropy occur demonstrated the importance of the three-dimensional nature of the stimulus objects. Early visual processing thus makes use of heuristics that take into account specific relationships between the relative locations in space of the observer and 3-D objects.