Cognitive diagnosis models for multiple strategies

Cognitive diagnosis models (CDMs) have been used as psychometric tools in educational assessments to estimate students’ proficiency profiles. However, most CDMs assume that all students adopt the same strategy when approaching problems in an assessment, which may not be the case in practice. This study develops a generalized multiple-strategy CDM for dichotomous response data. The proposed model provides a unified framework to accommodate various condensation rules (e.g., conjunctive, disjunctive, and additive) and different strategy selection approaches (i.e., probability-matching, over-matching, and maximizing). Model parameters are estimated using the marginal maximum likelihood estimation via expectation-maximization algorithm. Simulation studies showed that the parameters of the proposed model can be adequately recovered and that the proposed model was relatively robust to some types of model misspecifications. A set of real data was analysed as well to illustrate the use of the proposed model in practice.     

Cognitive strategies for controlling emotional contagion

This study examined strategies for limiting susceptibility to “catching” negative emotions from others. Participants watched 3 videos of happy or sad individuals, as though they were therapists interacting with clients. The entire process was videotaped. Emotional contagion was measured by facial affect and self‐reports. Prior to viewing the videos, participants were assigned one of 4 cognitive strategies: (a) empathic imagery; (b) dissociation; (c) reflection; or (d) no instruction (control). Empathic imagery was expected to increase contagion vs. the control, while dissociation and reflection were expected to decrease contagion. Results indicated that only dissociation decreased contagion on both measures.     

Cognitive strategies in coping with expedition stress

Expeditions provide a valuable opportunity for studying processes of coping with a stressful situation. An expedition to India organized by the British Schools Exploring Society has already been reported as being accompanied by positive changes on self-report personality scales. This paper is concerned with detailed cognitive coping measures completed throughout the 6 weeks of the expedition. It needs to be noted that the results relate to young adults and to those who provided detailed coping information; the generalizability of the result is a matter for future research. The expedition presented a mixture of physical and social stresses. Men enjoyed the physical experience more than women, but women enjoyed the social experience more than men. There was generally greater reliance on personal resources than on social support in coping with stress. This was particularly true for men in coping with physical stress and women in coping with social stress. In general, the physical stresses had been better anticipated than the social ones. Positive reformulations were much more widely used as coping strategies than avoidance/resignation strategies, especially so for physical stresses. However, use of avoidance/resignation strategies was the better predictor of outcome, with those who used them being least likely to show positive personality change as a result of the expedition. The results are related to current research on stress and coping.     

Cognitive strategies for coping with uncertain outcomes

It was proposed that, when faced with highly desirable but uncertain outcomes, people may employ cognitive strategies in an attempt to influence their future affective responses to the outcomes in question. The present study attempted to demonstrate the use of two such strategies. First, it was hypothesized that when people are faced with a low probability of obtaining a highly desirable outcome, they tend to derogate that outcome by perceiving it as less attractive. Second, it was proposed that when people are faced with uncertainty regarding the occurrence of a highly desirable outcome, they tend to underestimate the likelihood of its occurrence, in an attempt to avoid future disappointment. These hypotheses were tested within the context of a lottery in which subjects were given a low, moderate, or high chance of winning a prize that was either high or low in attractiveness. As predicted, subjects viewed the highly attractive prize as less valuable and attractive when they had a low probability of winning than when the probability of winning was moderate or high. Subjects also perceived themselves as less likely to win when the prize was high in attractiveness than when it was low in attractiveness. The relationship of these findings to studies of self-handicapping and attribute ambiguity is discussed.     

Cognitive strategies and strategic learning. The socio-instructional approach

Recent developmental studies have focused on children's learning strategies and on the socio-instructional dynamics that foster strategic learning. The introduction of Vygotsky's concept of the zone of proximal development has been central to this research effort. Zone theory is discussed in the context of traditional cognitive strategies research and in terms of its practical applications.     

Cognitive dysfunction in depression: neurocircuitry and new therapeutic strategies

Major depressive disorder (MDD) is a disabling medical condition associated with significant morbidity, mortality and public health costs. However, neurocircuitry abnormalities underlying depression remain incompletely understood and consequently current treatment options are unfortunately limited in efficacy. Recent research has begun to focus specifically on cognitive aspects of depression and potential neurobiological correlates. Two fundamental types of cognitive dysfunction observed in MDD are cognitive biases, which include distorted information processing or attentional allocation toward negative stimuli, and cognitive deficits, which include impairments in attention, short-term memory and executive functioning. In this article, we present a selective review of current research findings in these domains and examine neuroimaging research that is beginning to characterize the neurocircuitry underlying these biases and deficits. We propose that deficient cognitive functioning, attention biases and the sustained negative affect characteristic of MDD can be understood as arising in part from dysfunctional prefrontal-subcortical circuitry and related disturbances in the cognitive control of emotion. Finally, we highlight potential new pharmacological and non-pharmacological therapeutic strategies for MDD based on an evolving mechanistic understanding of the disorder.     

Cognitive components in risk perception: Natural versus manmade risks

In a questionnaire study 106 Norwegian students rated natural and manmade hazards according to risk magnitude and public versus private responsibility for risk management. Another group of 50 subjects judged 36 natural hazards on nine risk dimensions used in previous psychometric studies of ‘manmade risks’. When ratings on nine risk characteristics for natural hazards were factor analyzed a three-dimensional solution was found, with one active/passive dimension, one potency dimension, and one novelty dimension. This contrasts with the two-dimensional solution found for manmade hazards. Responsibility for risk management was found to be related to the type of risk in focus, and different risk characteristics seem to play different roles for manmade and natural hazards.     

Cognitive neutralising strategies and their use across differing stressor types

Abstract

Three studies are described which investigate the kinds of strategies that individuals use to devalue the threatening meaning of a stressor (cognitive neutralising strategies, CNS). These studies identified seven factorially independent constructs corresponding to Downward Comparison, Positive Reappraisal, Cognitive Disengagement, Optimism, Faith in Social Support, Denial and Life Perspective. The use of CNS was highly correlated with the use of problem-focused coping strategies regardless of stressor type, but associated with the use of avoidance coping and emotion-focused coping only in the case of certain stressor types. The role of CNS in the coping process is discussed in the light of the present results.     

Cognitive control under stress: how stress affects strategies of task-set reconfiguration

This study investigated the effect of stress on cognitive control in task shifting. Subjects shifted between two tasks in an explicit cuing paradigm. Shift costs (i.e., performance decrements on task shifts relative to task repetitions) were measured for a long and a short cue-stimulus interval (CSI). Stress was varied by administering low-stress and high-stress IQ scales to two groups of subjects. In the low-stress group, shift costs were reduced with an increased CSI, a result that typically indicates anticipatory and shift-specific task-set reconfiguration. In the high-stress group, however, shift costs were independent of the CSI. This result is consistent with the idea that stress induces a change in the reconfiguration strategy, possibly to adapt to depleted resources.     

Cognitive culture: theoretical and empirical insights into social learning strategies

Research into social learning (learning from others) has expanded significantly in recent years, not least because of productive interactions between theoretical and empirical approaches. This has been coupled with a new emphasis on learning strategies, which places social learning within a cognitive decision-making framework. Understanding when, how and why individuals learn from others is a significant challenge, but one that is critical to numerous fields in multiple academic disciplines, including the study of social cognition.     

Cognitive reappraisal and acceptance: an experimental comparison of two emotion regulation strategies

The purpose of the present study was to compare the effect of cognitive reappraisal and acceptance on subjective distress, physiological reactions and behavioral avoidance in relation to aversive emotional states elicited by film-clips. Ninety-four participants were randomized to one of three groups. The Reappraisal group was instructed to think about what they saw in a way that minimized negative emotional reactions, the Acceptance group was told to let their feelings come and go without trying to control or avoid them, while the Watch (control) group was told just to watch the film-clips. Compared to the control condition, both reappraisal and acceptance led to significant reductions of subjective distress, physiological reactions associated with aversive emotions and behavioral avoidance. On the three types of measures there were few significant differences between the Reappraisal and Acceptance groups, but when such differences existed they were to the benefit of the Reappraisal condition. In the reappraisal condition there was however a positive correlation between elicited aversive emotion and avoidance, while no such correlation existed in the acceptance condition. The results are interpreted and discussed in relation to the theories underlying reappraisal and acceptance as well as the conceptual framework for emotion regulation established by Gross (2007).     

Cognitive sex differences: speed and problem-solving strategies on computerized neuropsychological tasks

Skill, strategy, and laterality measures obtained through computerized neuropsychological tasks, a reaction time (RT) test, and a visuospatial problem-solving test, the Perceptual Maze Test, were analyzed in relation to sex and handedness of 56 high-school students. Boys were significantly faster than girls on most RT subtasks (including a response-inhibition task) and made more two-choice RT response errors for right-sided stimuli, which may be interpreted as resulting from a less cautious strategy. In maze performance, boys were superior to girls. An analysis of separate phases of the maze-solution process suggested that boys preferentially used an impulsive-global strategy. Girls, using a more reflective-sequential task-solving strategy, were significantly slower, without hitting more targets. Compared to all other groups, left-handed girls (strongly left-handed) had lower performance on maze tasks with no target information, particularly in left-sided solution pathways. Results were interpreted as reflecting differences in hemispheric competence and activation patterns between the sexes. Signs of a less differentiated lateralization and slight dysfunction of visuospatial skills in the left-handed girls were discussed.     

Cognitive strategies in discourse processing: A comparison of Chinese and English speakers

Three experiments tested the hypothesis that, when processing a normative language, individuals tend to adopt the discourse processing strategies that they use in their native language. In a natural language processing task, native speakers of English and Chinese read English passages that were heavily loaded with zero anaphora. Native Chinese speakers found the passages more comprehensible than did native English speakers, presumably because zero anaphora occurs much more often in Chinese than in English. However, in an artificial laboratory task, native Chinese speakers did not find it easier to recover the missing referents than did native English speakers, suggesting that the two groups were equally capable of reference retrieval although they differed in their natural language discourse-processing strategies. These results suggest that the strategies used for processing foreign-language discourse are influenced by those used to process native-language discourse.This research was supported in part by Dean's Small Grants from the Graduate School of the University of Colorado to Liang Tao and United States Army Research Institute Contracts MDA903-90-K-0066 and MDA903-93-K-0010 to the University of Colorado (Alice Healy, Principal Investigator).We thank Barbara Fox, Lise Menn, and Nanfang Jiang for stimulating discussions about this research.An earlier version of this paper was presented at the First International Conference on Chinese Linguistics held in Singapore, 1992.