Burying by rats in response to aversive and nonaversive stimuli

Previous investigations have shown that rats bury a variety of conditioned and unconditioned aversive stimuli. Such burying has been considered as a species-typical defensive reaction. In the present studies, rats buried spouts filled with Tabasco sauce, or condensed milk to which a taste aversion was conditioned, but did not bury water-filled spouts or spouts filled with a palatable novel food (apple juice) to which a taste aversion was not conditioned. However, in other experiments rats consistently and repeatedly buried Purina Rat Chow, Purina Rat Chow coated with quinine, and glass marbles. This indicates that a variety of stimuli, not all aversive or novel, evoke burying by rats. Whereas the behavior may reasonably be considered as a species-typical defensive behavior in some situations, the wide range of conditions that occasion burying suggests that the behavior has no single biological function.     

Global Progress II: Evolutionary Mechanisms and their Side-effects

This paper attempts to update the 18th century concept of progress by an evolutionary theoretical framework, while replying to some of the contemporary critiques. Progress, understood as increase in fitness (or its proxy, quality of life) necessarily accompanies evolution by natural selection. In socio-cultural evolution, this mechanism is reinforced by growth of knowledge and virtuous cycles, but can be accompanied by negative side-effects such as overshooting and parasitism. The most pressing of the contemporary side-effects, such as pollution and the increased pace of life, are discussed, but it is concluded that they can be tackled without really endangering global progress. The anxiety that they engender is unfortunately amplified by a bad news bias in the media, leading to an inappropriately pessimistic view of the situation by the public.     

Constant vigilance: Heritage values and defensive pessimism in coping with severe acute respiratory syndrome in Singapore

The present study investigates the congruency of defensive pessimism in the Asian context and its role in coping with the severe acute respiratory syndrome (SARS) crisis in Singapore. Data collected from 174 Singaporeans supported the hypothesized relationships among Chinese values, defensive pessimism, SARS-related fears, compliance to preventive health-related behaviors and negative outcomes. Path analysis revealed that individuals' endorsement of Chinese value clusters − prudence, industry, and civic harmony − positively predicted their levels of defensive pessimism. The results also indicated that defensive pessimism had a direct positive effect on SARS-related fears and, SARS-related fears, in turn, were directly related to direct preventive health-related behaviors but not related to indirect preventive behaviors. In addition to the indirect effect of Chinese values on direct preventive health-related behaviors, Chinese values had a direct positive effect on both direct and indirect preventive health-related behaviors. Consistent with our contention that defensive pessimism has the potential for leading to particular negative outcomes, defensive pessimism was found to influence negative outcomes but this relationship was partially mediated by SARS-related fears.     

Implicit racial bias and epistemic pessimism

Implicit bias results from living in a society structured by race. Tamar Gendler has drawn attention to several epistemic costs of implicit bias and concludes that paying some costs is unavoidable. In this paper, we reconstruct Gendler’s argument and argue that the epistemic costs she highlights can be avoided. Though epistemic agents encode discriminatory information from the environment, not all encoded information is activated. Agents can construct local epistemic environments that do not activate biasing representations, effectively avoiding the consequences of activation. We conclude that changing our local environments provides a way to avoid paying implicit bias’s epistemic costs.     

Cognitive biases in three prediction tasks: A test of the cognitive model of depression

Cognitive therapy for depression is based on an assumption that depressed individuals have inaccurate, negative biases. Whether this assumption is accurate remains unresolved. Thus, this study sought to examine the relationship between depressive symptoms and bias in three sets of predictions (i.e., predictions of future life events, how one would be rated by a significant other, and performance on a vocabulary test). Following study announcements made to a subset of people pre-screened for depressive symptoms, 85 participants with widely varying depressive symptoms (17 of whom met diagnostic criteria for depression) made predictions on three judgment tasks and the outcomes for these tasks were assessed. Optimistic/pessimistic biases were related to depressive symptoms for each of the three tasks. Participants with high levels of depressive symptoms and depressed participants exhibited substantial pessimistic bias. Those high in depressive symptoms exhibited significant pessimistic bias on all three tasks. Participants meeting diagnostic criteria for depression exhibited pessimistic bias on two of three tasks. There was no evidence that depressive symptoms were associated with greater accuracy in judgments. Results are largely consistent with cognitive models of depression which postulate that depression is associated with pessimistic biases.     

国外乐观研究述评

乐观是积极心理学研究中的核心概念之一。综观国外有关乐观的研究成果,认为乐观是一个与个体的未来定向密切相关的概念,是影响人的身心健康的重要因素。主要介绍了有关乐观的概念,包括乐观的期望-价值模型论,人格特质论和解释风格论;单因素、二因素、三因素和等级模型的心理结构;以及相应的测量方法。在中国文化背景下有关乐观的神经生物学基础的研究和乐观对人的身心健康的影响机制的研究是未来的研究趋向     

Trauma and defences: their roots in relationship. An overview

In this paper the differing psychodynamic models of defences are outlined and compared with an attachment theory perspective in which affect regulation plays a central role. Behavioural and intrapsychic distance regulation (defensive exclusion) are seen as the main strategies for affect regulation and are the manifestations of the habitual pattern of emotional regulation in the relationship between the child and the primary caregiver. A new perspective on unconscious fantasy is offered, in which fantasies are seen to be actively created as defensive narratives to protect the development of healthy narcissism and to become integrated into a person's internal working models. Archetypal defences are explored from a developmental perspective and some neurobiological issues relevant to defences are highlighted.     

Emotional Word Detection and Adolescent Repressive–Defensive Coping Style

This study used a computer-based emotional word-recognition task to assess the emotional processing styles of repressive–defensive youth. A hypothesis was tested proposing that adolescent repressive–defensive coping style is associated with rapid engagement and disengagement of emotional stimuli (negative and positive). Data were collected on a male adolescent sample enrolled in a juvenile diversion program allowing for the comparison of anxious, low-anxious, and repressive–defensive youth. Consistent with prediction, repressive–defensive participants exhibited facilitated responding to emotional relative to neutral word stimuli across valence category (i.e., positive and negative). In contrast, anxious participants exhibited a unique pattern of facilitated responding to positive word stimuli. The current findings represent a first attempt at investigating the processing impairments of repressive–defensive coping style in a nonadult sample. Results are interpreted in light of broader adult and child research findings on emotional processing and affective disturbance.     

Control situacional y focalización en la tarea en pesimistas defensivos y optimistas

Resumen

El presente estudio trata de contribuir a la comprensión de la naturaleza y funcionalidad de las estrategias cognitivas de pesimistas defensivos y optimistas.Para ello manipulamos la controlabilidad de la situación. Pensamos que la valoración de control situacional es un proceso básico que puede estar subyaciendo a los efectos encontrados por estudios previos cuando inducen respuestas congruentes o incongruentes con el estilo valorativo de estos sujetos. Utilizamos un diseño factorial 2 (Grupo: pesimistas defensivos, optimistas) X 2 (Control situacional: alto, bajo). Pretend'amos estimular un nivel de control situacional congruente o no con cada estrategia, con vistas a evaluar su influencia en la estrategia de la focalización en la tarea, y en otras respuestas de tipo motivacional (intención de esfuerzo, importancia de los resultados) y adaptativo (cambio en ansiedad y rendimiento).

Los resultados mostraron 1) que el control situacional es un factor relevante en la activación diferencial de la estrategia de la focalización; 2) en los pesimistas defensivos la condición congruente (preferida) es la de control bajo, que estimula una focalización negativa en la tarea; en los optimistas, por el contrario, la condición preferida es la de control alto, que estimula una baja focalización (distracción). En la discusión relacionamos el nivel de control y de focalización preferido por cada grupo con diferencias individuales en orientación motivacional: a la incertidumbre, en los pesimistas defensivos, y a la certidumbre en los optimistas. Asimismo, diferenciamos entre la estrategia de distracción de los optimistas y mecanismos de defensa como la negación y la represión.     

Is dispositional optimism or dispositional pessimism predictive of ideal cardiovascular health? The Young Finns Study

Objective: We examined the independent association between dispositional optimism compared to dispositional pessimism and ideal cardiovascular health (defined by the American Heart Association).

Design: A prospective design with a study sample of 1113 participants aged 24–39 years from the longitudinal Young Finns Study.

Main outcome measures: Ideal cardiovascular health (comprised of seven ideal cardiovascular health metrics) was measured in 2001. The ideal cardiovascular health metrics were reassessed in 2007.

Results: Low pessimism rather than high optimism was a better predictor of ideal cardiovascular health in 2007. When examining the association between optimism and pessimism and the seven ideal cardiovascular health metrics in 2007 (BMI, diet, physical activity, smoking status, blood pressure, total cholesterol and plasma glucose), low pessimism predicted non-smoking status, ideal physical activity and eating a healthy diet, while high optimism was associated with eating a healthy diet.

Conclusion: Our findings suggest that low pessimism rather than high optimism is associated with ideal cardiovascular health, especially with health behaviours such as not smoking, being physically active and eating a healthy diet. Socio-economic status was the potential mediating or confounding factor. Future studies should examine the differential meaning of the optimism/pessimism concepts to further clarify their relation to health outcomes.