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131.
Laura A. Richardson John H. Porcerelli V. Barry Dauphin Pierre Morris William Murdoch 《Journal of personality assessment》2018,100(2):156-165
Research has indicated that as many as 10% to 15% of primary care patients have symptoms that are not well explained medically. These patients could be labeled as “somatizers.” This study assessed the extent to which underlying psychological characteristics contribute to a person's level of somatization and service utilization. The Social Cognition and Object Relations Scale–Global Rating Method (SCORS–G; Stein, Hilsenroth, Slavin-Mulford, & Pinsker, 2011; Westen, 1995) was used to rate early memory narratives of 100 patients in a suburban primary care setting. Using principal axis factoring, the SCORS–G was divided into 2 components and these components (cognitive and affective) were used in subsequent analyses. The affective component was significantly negatively correlated with 2 measures of somatization and positively related to physician ratings of global health. The affective component also showed a trend toward significance on overnight hospital stays and patient-rated health. The cognitive component showed a trend toward significance with both measures of somatization, but it was not correlated with other measures of health. This study demonstrates the value of assessing underlying processes (via SCORS–G ratings of early memory narratives) that contribute to increased rates of somatization and health care utilization. Clinical implications for the relationship between affect and physical health are explored. 相似文献
132.
It is well established that processes of perception and action interact. A key question concerns the role of attention in the interaction between perception-action processes. We tested the hypothesis that spatial attention is shared by perception and action. We created a dual-task paradigm: In one task, spatial information is relevant for perception (spatial-input task) but not for action, and in a second task, spatial information is relevant for action (spatial-output task) but not for perception. We used endogenous pre-cueing, with two between-subjects conditions: In one condition the cue was predictive only for the target location in the spatial-input task; in a second condition the cue was predictive only for the location of the response in the spatial-output task. In both conditions, the cueing equally affected both tasks, regardless of the information conveyed by the cue. This finding directly supports the shared input-output attention hypothesis. 相似文献
133.
Instrumental learning and cognitive flexibility processes are impaired in children exposed to early life stress
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Madeline B. Harms Katherine E. Shannon Bowen Jamie L. Hanson Seth D. Pollak 《Developmental science》2018,21(4)
Children who experience severe early life stress show persistent deficits in many aspects of cognitive and social adaptation. Early stress might be associated with these broad changes in functioning because it impairs general learning mechanisms. To explore this possibility, we examined whether individuals who experienced abusive caregiving in childhood had difficulties with instrumental learning and/or cognitive flexibility as adolescents. Fifty‐three 14–17‐year‐old adolescents (31 exposed to high levels of childhood stress, 22 control) completed an fMRI task that required them to first learn associations in the environment and then update those pairings. Adolescents with histories of early life stress eventually learned to pair stimuli with both positive and negative outcomes, but did so more slowly than their peers. Furthermore, these stress‐exposed adolescents showed markedly impaired cognitive flexibility; they were less able than their peers to update those pairings when the contingencies changed. These learning problems were reflected in abnormal activity in learning‐ and attention‐related brain circuitry. Both altered patterns of learning and neural activation were associated with the severity of lifetime stress that the adolescents had experienced. Taken together, the results of this experiment suggest that basic learning processes are impaired in adolescents exposed to early life stress. These general learning mechanisms may help explain the emergence of social problems observed in these individuals. 相似文献
134.
Markus Martini Caroline Martini Thomas Maran Pierre Sachse 《Journal of Cognitive Psychology》2018,30(5-6):558-569
Recent work shows that post-encoding wakeful rest, in contrast to a cognitive task delay period, supports memory performance. The present study aimed at investigating whether study time modulates the impact of post-encoding rest on delayed memory performance. Healthy young adults were allocated to one of two “study time” groups (fixed-paced vs. self-paced). Participants encoded two word lists. After immediate recall of one word list, participants wakefully rested for 8?min, after the other, they performed a visual problem solving task. A delayed recall took place at the end of the experimental session (Experiment 1) and again after 7 days (Experiment 1?+?2). We found that participants in the self-paced group outperformed those in the fixed-paced group. In Experiment 1, participants showed higher memory performances after 7 days in the resting condition independent of study time. No significant differences between post-encoding (rest vs. problem solving) and study time conditions were found in Experiment 2. Combined analyses of both experiments revealed that an additional recall (Experiment 1) supported memory retention in both post-encoding conditions. Our findings suggest that resting is beneficial over the long term, but only when the encoded information is repeatedly retrieved at the end of a learning session. 相似文献
135.
In the literature relating to visuo-motor control, controversial data are found concerning the consequence of enriching the visual scene in the specification of the target's spatial coordinates. In this paper four experiments were carried out to unravel this issue. Based on spatio-temporal analysis of pointing movements carried out in an open loop condition, the effect of appending contextual elements in the vicinity of a visual target was investigated, taking into account (1) their location in the visual field, (2) the extent of the movement, and (3) their presence during the planning and/or execution period of the movement. Taken as a whole, results showed that enriching the visual scene gave rise to a decrease of perceptual underestimation of distance (with no effect on the direction parameter), as otherwise observed (dark environment). Though not deeply affecting reaction and movement time, this effect held whatever the target position, provided that the contextual elements were situated between the initial and terminal position of the hand trajectory. The magnitude of the effect was, however, dependent upon the space conferred to the visual context. Furthermore, a higher spatial performance was observed when the latter was provided during the planning of execution period of the movement. Both effects combined when contextual elements were provided during the entire movement, which suggests a continuous updating of target coordinates during the whole motor performance. Altogether these findings underline a dynamic aspect of space perception, originating, in part, in the functional use of contextual cues in the coding of target distance. They also suggest that, provided the visual environment is structured, the retinal signal is widely used in the perception of target distance in visuo-manual tasks. 相似文献
136.
137.
Perruchet P Cleeremans A Destrebecqz A 《Journal of experimental psychology. Learning, memory, and cognition》2006,32(5):955-965
After repeated associations between two events, E1 and E2, responses to E2 can be facilitated either because participants consciously expect E2 to occur after E1 or because E1 automatically activates the response to E2, or because of both. In this article, the authors report on 4 experiments designed to pit the influence of these 2 factors against each other. The authors found that the fastest responses to a target in a reaction time paradigm occurred when automatic activation was highest and conscious expectancy lowest. These results, when considered together with previous findings indicating that, under most conditions, the relation between expectancy and reaction times is in the opposite direction, are indicative of a reversed association-an interaction pattern that J. C. Dunn and K. Kirsner (1988) demonstrated to be the only one that unambiguously points to the involvement of independent processes. 相似文献
138.
This experiment assesses spatial and nonspatial relational memory in freely moving 9-mo-old and adult (11-13-yr-old) macaque monkeys (Macaca mulatta). We tested the use of proximal landmarks, two different objects placed at the center of an open-field arena, as conditional cues allowing monkeys to predict the location of food rewards hidden in one of two sets of three distinct locations. Monkeys were tested in two different conditions: (1) when local visual cues marked the two sets of potentially baited locations, so that monkeys could use both local and spatial information to discriminate these locations from never-baited locations; and (2) when no local visual cues marked the two sets of potentially baited locations, so that monkeys had to rely on a spatial relational representation of the environment to discriminate these locations. No 9-mo-old or adult monkey associated the presence of the proximal landmarks, at the center of the arena, with the presence of food in one set of three distinct locations. All monkeys, however, discriminated the potentially baited locations in the presence of local visual cues, thus providing evidence of visual discrimination learning. More importantly, all 9-mo-old monkeys tested discriminated the potentially baited locations in absence of the local visual cues, thus exhibiting evidence of spatial relational learning. These findings indicate that spatial memory processes characterized by a relational representation of the environment are present as early as 9 mo of age in macaque monkeys. 相似文献
139.
The domain-general learning mechanisms elicited in incidental learning situations are of potential interest in many research fields, including language acquisition, object knowledge formation and motor learning. They have been the focus of studies on implicit learning for nearly 40 years. Stemming from a different research tradition, studies on statistical learning carried out in the past 10 years after the seminal studies by Saffran and collaborators, appear to be closely related, and the similarity between the two approaches is strengthened further by their recent evolution. However, implicit learning and statistical learning research favor different interpretations, focusing on the formation of chunks and statistical computations, respectively. We examine these differing approaches and suggest that this divergence opens up a major theoretical challenge for future studies. 相似文献
140.
The degree of specificity at which emotional information is activated might determine evoked emotional intensity. However, the nature of this effect remains unclear. Four studies tested (a) whether people hold the na?ve theory that activating specific details of emotional information arouses acute feelings; (b) whether an emotionally distressed population (social phobics) also holds that theory; and (c) whether voluntarily focusing on specific aspects of a distressing situation reduces its emotional impact. Results indicate that control as well as emotionally distressed people hold a na?ve theory that specifying emotion increases its intensity. However, Studies 3 and 4 showed that voluntarily elaborating specific aspects of a distressing situation reduces distress. Results are discussed in terms of voluntary versus automatic processing of emotional information. 相似文献