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181.
When is one head better than two? Interdependent information in group decision making 总被引:1,自引:0,他引:1
Research on information exchange in group decision making has frequently assumed that information items have independent meanings. Relaxing this assumption raises new issues and presents new possibilities. In the experiment presented here, dyads worked on hidden profile decision tasks in which pairs of unshared information items had interdependent meanings. Dyad decisions were more likely to be accurate when each pair of interdependent items was allocated to a single member (a “connected” hidden profile) than when each pair of interdependent items was separated between the two members (a “disconnected” hidden profile). These information distributions influenced the degree to which dyads considered unshared information. Cognitive load was manipulated, and it impaired decision makers’ ability to identify connections among interdependent information items. The differentiated distribution of information inherent in transactive memory systems moderated the negative effects of cognitive load on dyad decisions. 相似文献
182.
A widespread belief in happiness research is that measures of life satisfaction capture the variety of an individual’s experiences along a single favorable—unfavorable dimension. The current article points to a possible violation of this assumption. With a combination of data and theory it argues that life satisfaction is not a balanced reflection of subjective experiences because the evaluation that drives judgments of life satisfaction is tilted towards pleasure and away from engagement. We postulate that feelings of pleasure are overrated in statements of life satisfaction, whereas feelings of engagement are underrepresented. Feelings of engagement and interest are further supposed to be indicators of personal growth. Measures of personal growth and life satisfaction should thus be unrelated. Empirical evidence for our model is provided by self-report and reaction time data from a Norwegian convenience sample (N = 30). Detection latencies for pleasant stimuli correlated significantly with life satisfaction but not with measures of personal growth. Life satisfaction correlated significantly with pleasant experiences, but not with engagement. Personal growth correlated significantly with feelings of engagement. Life satisfaction and personal growth were uncorrelated. 相似文献
183.
Stephen E. Robbins 《Phenomenology and the Cognitive Sciences》2009,8(1):33-66
Within Piaget there is an implicit theory of the development of explicit memory. It rests in the dynamical trajectory underlying
the development of causality, object, space and time – a complex (COST) supporting a symbolic relationship integral to the
explicit. Cassirer noted the same dependency in the phenomena of aphasias, insisting that a symbolic function is being undermined
in these deficits. This is particularly critical given the reassessment of Piaget’s stages as the natural bifurcations of
a self-organizing dynamic system. The elements of a theoretical framework required to support explicit memory are developed,
to include, (1) the complex developmental trajectory supporting the emergence of the explicit in Piaget, (2) the concrete
dynamical system and the concept of a non-differentiable time contained in Bergson’s theory required to support a conscious,
as opposed to an implicit remembrance, (3) the relation to current theories of amnesia, difficulties posed by certain retrograde
amnesic phenomena, the role of the hippocampus and limitations of connectionist models, (4) the fact that nowhere in this
overall framework does the loss of explicit memory imply or require the destruction of experience “stored in the brain.” 相似文献
184.
The mechanism underlying inhibition of saccadic return 总被引:1,自引:0,他引:1
Casimir J.H. Ludwig Simon Farrell Lucy A. Ellis Iain D. Gilchrist 《Cognitive psychology》2009,59(2):180-202
Human observers take longer to re-direct gaze to a previously fixated location. Although there has been some exploration of the characteristics of inhibition of saccadic return (ISR), the exact mechanisms by which ISR operates are currently unknown. In the framework of accumulation models of response times, in which evidence is integrated over time to a response threshold, ISR could reflect a reduction in the rate of accumulation for saccades to return locations or an increase in the effective criterion for response. In two experiments, participants generated sequences of three saccades, in response to a peripheral or a central cue. ISR occurred across these manipulations: saccade latency was consistently increased for movements to the immediately previously fixated location. Latency distributions from individual observers were fit with a Linear Ballistic Accumulator model. ISR was best accounted for as a change in the accumulation rate. We suggest this parameter represents the overall desirability of a particular course of action, the evidence for which may be derived from a variety of sensory and non-sensory sources. 相似文献
185.
Armando Machado Maria Teresa Malheiro Wolfram Erlhagen 《Journal of the experimental analysis of behavior》2009,92(3):423-458
In the last decades, researchers have proposed a large number of theoretical models of timing. These models make different assumptions concerning how animals learn to time events and how such learning is represented in memory. However, few studies have examined these different assumptions either empirically or conceptually. For knowledge to accumulate, variation in theoretical models must be accompanied by selection of models and model ideas. To that end, we review two timing models, Scalar Expectancy Theory (SET), the dominant model in the field, and the Learning‐to‐Time (LeT) model, one of the few models dealing explicitly with learning. In the first part of this article, we describe how each model works in prototypical concurrent and retrospective timing tasks, identify their structural similarities, and classify their differences concerning temporal learning and memory. In the second part, we review a series of studies that examined these differences and conclude that both the memory structure postulated by SET and the state dynamics postulated by LeT are probably incorrect. In the third part, we propose a hybrid model that may improve on its parents. The hybrid model accounts for the typical findings in fixed‐interval schedules, the peak procedure, mixed fixed interval schedules, simple and double temporal bisection, and temporal generalization tasks. In the fourth and last part, we identify seven challenges that any timing model must meet. 相似文献
186.
RUTING XIA MASATO FUKUSHIMA SHUN'ICHI DOI TAKAHIKO KIMURA TOSHIAKI MIURA 《Scandinavian journal of psychology》2009,50(4):293-300
Studies have shown that prior information concerning the spatial location of a subsequent target facilitates the selection of that target for further visual processing in three-dimensional (3-D) space. Using Posner's cuing paradigm, our work examined the reaction time of drivers when cue duration and peripheral environment luminance was changed, and explored the effect color and location on reaction time. Experiment 1 showed that reaction time was not affected by cue duration, and that shifts of attention operated more efficiently for cue location validity. Experiment 2 showed that there was no main effect of background luminance on reaction time. Experiment 3 showed that location produces a greater effect than color. 相似文献
187.
Markus Janczyk Stefanie Skirde Matthias Weigelt Wilfried Kunde 《Human movement science》2009,28(4):437-449
Effect-based models of motor control assign a crucial role to anticipated perceptual feedback in action planning. Two experiments were conducted to test the validity of this proposal for discrete bimanual key press responses. The results revealed that the normally observed performance advantage for the preparation of two responses with homologous rather than non-homologous fingers becomes inverted when homologous fingers produce non-identical visual effects, and non-homologous fingers produce identical visual effects. In the second experiment the finger homology effect was strongly reduced when homologous fingers produced non-identical tactile feedback. The results show that representations of to-be-produced visual and tactile action effects both contribute to action planning, though possibly to a varying degree. Implications of these results for effect-based models of motor control are considered. 相似文献
188.
Florian Fessel Kai Epstude Neal J. Roese 《Organizational behavior and human decision processes》2009,110(1):56-64
Four experiments introduced a new conceptual and methodological approach to hindsight bias, traditionally defined as the tendency to exaggerate the a priori predictability of outcomes after they become known. By examining likelihood estimates rooted to specific time points during an unfolding event sequence (videos and short text stories), judged both in foresight and hindsight, we conceptualized hindsight bias as a contrast between two “inevitability curves,” which plotted likelihood against time. Taking timing into account, we defined three new indicators of accuracy: linear accuracy (how well hindsight judgments capture the linear trend of foresight judgments over time), rate accuracy (how well hindsight judgments reflect the slope of foresight judgments over time), and temporal accuracy (how well hindsight judgments specify the overall timing of the full envelope of foresight judgments). Results demonstrated that hindsight judgments showed linear and rate accuracy, but were biased only in terms of lack of temporal accuracy. The oft-used catchphrase “knew it all along effect” was found to be a misnomer, in that participants were well aware in hindsight that their earlier foresight judgments reflected uncertainty. The current research therefore points to one way in which retrospective judgments can be considered biased, yet simultaneously suggests that considerable accuracy exists when people render such judgments. 相似文献
189.
Abbie J. Shipp Jeffrey R. Edwards Lisa Schurer Lambert 《Organizational behavior and human decision processes》2009
Temporal focus is the attention individuals devote to thinking about the past, present, and future, and the concept is important because it affects how people incorporate perceptions about past experiences, current situations, and future expectations into their attitudes, cognitions, and behavior. However, temporal focus has not been clearly defined nor situated in a nomological network of constructs. In addition, existing measures of temporal focus suffer from various shortcomings. In this paper, we advance the concept of temporal focus by critically examining its conceptualization, developing a new measure of temporal focus (Temporal Focus Scale; TFS), and evaluating the validity (i.e., construct, convergent, discriminant, nomological, and predictive validity) of the TFS across four studies. We conclude that understanding how individuals focus their attention toward the past, present, and future clarifies their responses to explicit and implicit temporal information, which suggests that a variety of research streams would benefit from incorporating the concept of temporal focus. 相似文献
190.
本文在实验经济学的基础上 ,用心理学的实验法 ,模拟了现实中在买卖交易价格信息不对称的情境下 ,时间压力不同对价格的影响问题。通过 62名被试对 2 0个小商品进行交易的前后两阶段——时间压力分别针对卖方和买方时的价格差异 ,即交易利润分成的差异 ,证实了时间压力对价格交易的显著作用。并使以往实验经济学交易价格封顶 (有最高价 )、交易双方被试相互熟悉以及交易被试个体差异因素没有相对控制等问题得到了改进。 相似文献