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191.
Mehlhorn K Taatgen NA Lebiere C Krems JF 《Journal of experimental psychology. Learning, memory, and cognition》2011,37(6):1391-1411
In the field of diagnostic reasoning, it has been argued that memory activation can provide the reasoner with a subset of possible explanations from memory that are highly adaptive for the task at hand. However, few studies have experimentally tested this assumption. Even less empirical and theoretical work has investigated how newly incoming observations affect the availability of explanations in memory over time. In this article we present the results of 2 experiments in which we address these questions. While participants diagnosed sequentially presented medical symptoms, the availability of potential explanations in memory was measured with an implicit probe reaction time task. The results of the experiments were used to test 4 quantitative cognitive models. The models share the general assumption that observations can activate and inhibit explanations in memory. They vary with respect to how newly incoming observations affect the availability of explanations over time. The data of both experiments were predicted best by a model in which all observations in working memory have the same potential to activate explanations from long-term memory and in which these observations do not decay. The results illustrate the power of memory activation processes and show where additional deliberate reasoning strategies might come into play. 相似文献
192.
One of the more controversial issues in working with people who self‐injure is whether counselors should use no‐harm contracts. Important therapeutic considerations include the efficacy of such contracts or agreements in preventing self‐injury, the emotional and behavioral responses of clients, and the perceived protection these contracts or agreements may offer counselors. The authors weigh potential benefits and pitfalls and make recommendations for working collaboratively with clients to meet their individual needs. 相似文献
193.
We describe methods for assessing all possible criteria (i.e., dependent variables) and subsets of criteria for regression
models with a fixed set of predictors, x (where x is an n×1 vector of independent variables). Our methods build upon the geometry of regression coefficients (hereafter called regression
weights) in n-dimensional space. For a full-rank predictor correlation matrix, R
xx, of order n, and for regression models with constant R
2 (coefficient of determination), the OLS weight vectors for all possible criteria terminate on the surface of an n-dimensional ellipsoid. The population performance of alternate regression weights—such as equal weights, correlation weights,
or rounded weights—can be modeled as a function of the Cartesian coordinates of the ellipsoid. These geometrical notions can
be easily extended to assess the sampling performance of alternate regression weights in models with either fixed or random
predictors and for models with any value of R
2. To illustrate these ideas, we describe algorithms and R (R Development Core Team, 2009) code for: (1) generating points that are uniformly distributed on the surface of an n-dimensional ellipsoid, (2) populating the set of regression (weight) vectors that define an elliptical arc in ℝ
n
, and (3) populating the set of regression vectors that have constant cosine with a target vector in ℝ
n
. Each algorithm is illustrated with real data. The examples demonstrate the usefulness of studying all possible criteria
when evaluating alternate regression weights in regression models with a fixed set of predictors. 相似文献
194.
Mechanisms of cortical reorganization underlying the enhancement of speech processing have been poorly investigated. In the present study, we addressed changes in functional and effective connectivity induced in subjects who learned to deliberately increase activation in the right inferior frontal gyrus (rIFG), and improved their ability to identify emotional intonations by using a real-time fMRI Brain-Computer Interface. At the beginning of their training process, we observed a massive connectivity of the rIFG to a widespread network of frontal and temporal areas, which decreased and lateralized to the right hemisphere with practice. Volitional control of activation strengthened connectivity of this brain region to the right prefrontal cortex, whereas training increased its connectivity to bilateral precentral gyri. These findings suggest that changes of connectivity in a functionally specific manner play an important role in the enhancement of speech processing. Also, these findings support previous accounts suggesting that motor circuits play a role in the comprehension of speech. 相似文献
195.
Ekkers W Korrelboom K Huijbrechts I Smits N Cuijpers P van der Gaag M 《Behaviour research and therapy》2011,49(10):588-596
Although rumination is an important mediator of depressive symptoms, there is insufficient proof that an intervention that specifically targets rumination ameliorates the clinical condition of, depressed patients. This study investigates whether a time-limited cognitive behavioral intervention (Competitive Memory Training, or COMET for depressive rumination) is an effective treatment for depression and rumination. This intervention was tested in older adult depressed outpatients. A total of 93 patients (aged ≥65 years with major depression and suffering from rumination) were treated in small groups according to the COMET protocol in addition to their regular treatment. Patients were randomized to two treatment conditions: 7 weeks of COMET + treatment-as-usual (TAU) versus TAU only. COMET + TAU showed a significant improvement in depression and rumination compared with TAU alone. This study shows that the transdiagnostic COMET protocol for depressive rumination might also be successful in treating depression and rumination in older adults. 相似文献
196.
197.
198.
Katrien Fransen Niels Mertens Stewart T. Cotterill Gert Vande Broek Filip Boen 《Journal of Applied Sport Psychology》2020,32(1):5-27
Sports coaches often fear that empowering the players in their team would undermine their own leadership status. To investigate the legitimacy of this perception, we mapped the leadership structure within 64 sports teams (N = 840). The results highlight that the perceived leadership quality of the coaches is positively related to the density of their team's leadership networks (i.e., the average leadership qualities of all players). This finding held for task, motivational, social, and external leadership. The best coaches are thus the ones who adopt a shared leadership approach and who strengthen the leadership quality of their players.Lay SummarySports coaches often feel that empowering the players in their teams undermines their own leadership status. This study investigates the legitimacy of this perception within 64 sports teams. Our findings provide evidence for the opposite view; by creating and developing leaders in their teams, coaches are perceived as better leaders themselves. 相似文献
199.
Complex problem solving is often an integration of perceptual processing and deliberate planning. But what balances these two processes, and how do novices differ from experts? We investigate the interplay between these two in the game of SET. This article investigates how people combine bottom‐up visual processes and top‐down planning to succeed in this game. Using combinatorial and mixed‐effect regression analysis of eye‐movement protocols and a cognitive model of a human player, we show that SET players deploy both bottom‐up and top‐down processes in parallel to accomplish the same task. The combination of competition and cooperation of both types of processes is a major factor of success in the game. Finally, we explore strategies players use during the game. Our findings suggest that within‐trial strategy shifts can occur without the need of explicit meta‐cognitive control, but rather implicitly as a result of evolving memory activations. 相似文献
200.
Niels Henrik Gregersen 《Dialog》2020,59(2):68-70
This essay contrasts two visions of selfhood: the buffered, autonomous self, and the flexible, resonant self. The autonomous self, while robustly assertive and active, seeks to insulate itself from threats, thereby robbing it of vital connections to other selves and to nature. The resonant self, in contrast, risks more by standing in fluid relationships of resonance and dissonance with its social and natural environments. While the two stand in tension, a baptismal theology entails both elements of a sheltered self and a resonant self that remains flexible and responsive to the ups and downs of human experience. Conversely, even a secular-minded person will have access to important zones of resonance. 相似文献