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951.
Cognitive vulnerability to depression: A comparison of the weakest link,keystone and additive models
Laura C. Reilly Julia W. Felton Amy S. Weitlauf Nicholas L. Anderson 《Cognition & emotion》2013,27(3):521-533
Multiple theories of cognitive vulnerability to depression have been proposed, each focusing on different aspects of negative cognition and utilising different measures of risk. Various methods of integrating such multiple indices of risk have been examined in the literature, and each demonstrates some promise. Yet little is known about the interrelations among these methods, or their incremental validity in predicting changes in depression. The present study compared three integrative models of cognitive vulnerability: the additive, weakest link, and keystone models. Support was found for each model as predictive of depression over time, but only the weakest link model demonstrated incremental utility in predicting changes in depression over the other models. We also explore the correlation between these models and each model's unique contribution to predicting onset of depressive symptoms. 相似文献
952.
Performing a physical activity means dealing with the challenges and difficulties occurring during the task. The more a person possesses the cognitive ability to deal with the complexity of the task, the more that person will be able to face the difficulties in activity regulation. However, no studies have been designed to investigate the cognitive dimension of physical activity. In the present study, we present an original in-task methodology that offers the means to assess the cognitive and physical load of a physical activity. Through the application of a dual task paradigm, we report in-task changes in cognitive abilities and physiological experiences in low and high tolerant individuals during the practice of one of two whole-body stepping tasks. The findings confirmed that stepping through space is a physical activity that requires more cognitive resources and is perceived as more cognitively and physically challenging than stepping on the spot. We demonstrated also that the tolerance to effort, which is a psychological factor, plays a non-negligible role in the way the activity sessions were experienced. The affective states in low tolerant individuals were always more negative than those reported by high tolerant individuals. Our findings argue for the existence of a cognitive dimension to physical activity with tolerance to effort being a moderator of individuals’ affective experience to exercise. 相似文献
953.
954.
Tina In-Albon Kathrin Dubi Ronald M. Rapee Silvia Schneider 《Behaviour research and therapy》2009,47(12):1058-1065
Cognitive distortions refer to cognitive processes that are biased and therefore yield dysfunctional and maladaptive products (e.g., interpretation bias). Automatic aspects of information processing need to be considered and investigating these aspects requires forms of assessment other than self-report. Studies focussing on the specificity of cognitive biases across different types of anxiety disorders in childhood are rare. Thus, a forced choice reaction time paradigm with picture stimuli was used to assess the interpretation bias in anxious children online. The study investigated disorder-specific interpretation bias in 71 children with separation anxiety disorder (SAD), 31 children with social phobia, and 42 children without mental disorders, aged 5–13 years. Results indicated that children with SAD rated ambiguous separation pictures as significantly more unpleasant and more arousing than nonanxious children. However, no support was found that children with SAD and social phobia interpret ambiguous separation or social pictures in a more negative way than nonanxious children. Furthermore, no group differences were found in reaction times to all picture categories. 相似文献
955.
This paper provides evidence for a possible generalization of Knoblich and colleagues’ representational change theory [Knoblich, G., Ohlsson, S., Haider, H., & Rhenius, D. (1999). Constraint relaxation and chunk decomposition in insight problem solving. Journal of Experimental Psychology: Learning, Memory, and Cognition, 25, 1534-1555; Knoblich, G., Ohlsson, S., & Raney, G. E. (2001). An eye movement study of insight problem. Memory and Cognition, 29, 1000-1009] outside its original scope of application. While this theory has been proposed to explain insight problem solving, we demonstrate here that its main concepts, namely, constraint relaxation and chunk decomposition, are applicable to incremental problem solving. In a first experiment, we confirm, as already shown by problem solving and reasoning researchers, that individuals avoid the construction of alternative representations of the problems when possible. In the second and third experiments, we show that alternative representations of arithmetic problems are easier to construct and maintain when they violate constraints of narrow rather than wide scope. The specificity of insight problem solving is discussed in the light of these new findings. 相似文献
956.
Moritz S Kerstan A Veckenstedt R Randjbar S Vitzthum F Schmidt C Heise M Woodward TS 《Behaviour research and therapy》2011,(3):151-157
Metacognitive training (MCT) for patients with schizophrenia is a novel psychological group treatment targeting cognitive biases putatively involved in the pathogenesis of schizophrenia (e.g. jumping to conclusions, overconfidence in errors). Its eight modules are available cost-free online in many languages. In the present study, 36 subacute or remitted patients were randomly allocated to either the MCT or a wait-list group who received treatment-as-usual (TAU). Baseline and post assessments were 8 weeks apart and were performed blind to group status. MCT showed significantly greater improvement on the following parameters relative to the TAU group: delusion distress (PSYRATS), memory and social quality of life. In the MCT group, the rate of jumping to conclusions bias was reduced after training. No differences occurred on the PANSS. The present study confirms prior reports that MCT exerts beneficial effects on some cognitive and symptomatic parameters. 相似文献
957.
Many wild primates occupy large home ranges and travel long distances each day. Navigating these ranges to find sufficient
food presents a substantial cognitive challenge, but we are still far from understanding either how primates represent spatial
information mentally or how they use this information to navigate under natural conditions. In the course of a long-term socioecological
study, we investigated and compared the travel paths of sympatric spider monkeys (Ateles belzebuth) and woolly monkeys (Lagothrix poeppigii) in Amazonian Ecuador. During several field seasons spanning an 8-year period, we followed focal individuals or groups of
both species continuously for periods of multiple days and mapped their travel paths in detail. We found that both primates
typically traveled through their home ranges following repeatedly used paths, or “routes”. Many of these routes were common
to both species and were stable across study years. Several important routes appeared to be associated with distinct topographic
features (e.g., ridgetops), which may constitute easily recognized landmarks useful for spatial navigation. The majority of
all location records for both species fell along or near identified routes, as did most of the trees used for fruit feeding.
Our results provide strong support for the idea that both woolly and spider monkey use route-based mental maps similar to
those proposed by Poucet (Psychol Rev 100:163–182, 1993). We suggest that rather than remembering the specific locations of thousands of individual feeding trees and their phenological
schedules, spider and woolly monkeys could nonetheless forage efficiently by committing to memory a series of route segments
that, when followed, bring them into contact with many potential feeding sources for monitoring or visitation. Furthermore,
because swallowed and defecated seeds are deposited in greater frequency along routes, the repeated use of particular travel
paths over generations could profoundly influence the structure and composition of tropical forests, raising the intriguing
possibility that these and other primate frugivores are active participants in constructing their own ecological niches. Building
upon the insights of Byrne (Q J Exp Psychol 31:147–154, 1979, Normality and pathology in cognitive functions. Academic, London, pp 239–264, 1982) and Milton (The foraging strategy of howler monkeys: a study in primate economics. Columbia University Press, New York,
1980, On the move: how and why animals travel in groups. University of Chicago Press, Chicago, pp 375–417, 2000), our results highlight the likely general importance of route-based travel in the memory and foraging strategies of nonhuman
primates.
This contribution is part of the Special Issue “A Socioecological Perspective on Primate Cognition” (Cunningham and Janson 2007). 相似文献
958.
This study tested the hypothesis that treatment of childhood memories is an effective way to change personality disorder related schemas and psychopathology in cognitive therapy for personality disorders. To test this hypothesis, a crossover design was used to compare the effectiveness of methods focusing on the present and methods focusing on childhood memories. After the exploration period, the therapist focused either first on the present during 24 sessions and than for 24 sessions on childhood memories, or followed the reverse order. Twenty-one patients with one or more Axis II disorders were included. Participants were randomly assigned to order of focus. Results indicate that CT methods focusing on childhood memories produce good outcomes, comparable to those of methods focusing on the present. There was no significant effect of order, but both patients and therapists preferred the past-present order. Total effects of the package were large and were maintained till one-year follow-up (d's 0.97-1.90). Experience of the therapist with CT for personality disorders was related to better outcome (d=0.73). 相似文献
959.
We examined differences in a visual search-based latent inhibition (LI) task in 48 non-treatment seeking individuals diagnosed with obsessive-compulsive disorder (OCD) and 26 non-OCD controls, using a visual search-based LI task as a function of participants’ primary obsessional presentation based on the autogenous-reactive subtype model of obsessions (
[Lee and Telch, 2005] and [Lee and Telch, 2007]). We hypothesized that LI would be significantly attenuated among OCD participants whose primary obsessions were characterized by aversive impulses, images, or thoughts with sexual, aggressive, blasphemous, and repulsive themes (autogenous obsessions) due to their weakened attentional inhibitory mechanisms and elevated schizotypal personality features, as compared with those whose primary obsessions were characterized by somewhat realistic aversive mental intrusions about contamination, mistakes, accidents, or disarray (reactive obsession) and non-OCD controls. Results showed that those primarily displaying autogenous obsessions failed to display LI, whereas those primarily displaying reactive obsessions and non-OCD controls displayed significant LI effects. Our data suggest that the magnitude of LI varies as a function of primary obsessional presentations among individuals with OCD. 相似文献
960.