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961.
We have only limited awareness of the system by which we control our actions and this limited awareness does not seem to be concerned with the control of action. Awareness of choosing one action rather than another comes after the choice has been made, while awareness of initiating an action occurs before the movement has begun. These temporal differences bind together in consciousness the intention to act and the consequences of the action. This creates our sense of agency. Activity in the anterior cingulate cortex and medial prefrontal cortex is associated with awareness of our own actions and also occurs when we think about the actions of others. I propose that the mechanism underlying awareness of how our own intentions lead to actions can also be used to represent the intentions that underlie the actions of others. This common system enables us to communicate mental states and thereby share our experiences.  相似文献   
962.
In this paper we present Drama , a distributed model of analogical mapping that integrates semantic and structural constraints on constructing analogies. Specifically, Drama uses holographic reduced representations (Plate, 1994), a distributed representation scheme, to model the effects of structure and meaning on human performance of analogical mapping. Drama is compared to three symbolic models of analogy (SME, Copycat, and ACME) and one partially distributed model (LISA). We describe Drama's performance on a number of example analogies and assess the model in terms of neurological and psychological plausibility. We argue that Drama's successes are due largely to integrating structural and semantic constraints throughout the mapping process. We also claim that Drama is an existence proof of using distributed representations to model high-level cognitive phenomena.  相似文献   
963.
Social cognitive theory (Bandura, 1986, 1995, 1997) has figured prominently among social psychological approaches taken to the investigation of exercise behavior. The present study validated two measures of self-efficacy (scheduling and task) through confirmatory factor analytic procedures. In a separate study, the resultant factors were then used as independent variables in the prediction of exercise behavior and behavioral intention in a structural equation model. Task self-efficacy was found to be more related to behavioral intention than scheduling self-efficacy. Scheduling self-efficacy was found to be more related to behavior than task self-efficacy or behavioral intention. Results support different types and motivational functions of self-efficacy for exercise intentions and behavior.  相似文献   
964.
Objective: This study assessed: (1) whether risk perceptions about skin cancer were related to parent's use of sunscreen on their children; (2) which combination of assessments susceptibility and severity best explain parental sunscreen protection behaviours and (3) whether risk perceptions influence behaviour directly through intentions or through attitudes, subjective norms and self-efficacy.

Design: Two longitudinal studies assessed sunscreen protection behaviours of parents for their toddlers (N?=?391) and young children (N?=?436).

Main outcome measure: Parent's use of sunscreen on their children.

Results: Risk perceptions correlated with future sunscreen protection behaviours of parents but were lower than those of attitude, social influence and self-efficacy. Treating susceptibility and severity as an additive function resulted in the best model fit. Risk perceptions were related with future intention and future sunscreen protection behaviour, but the effects were mediated through attitude, social influence and self-efficacy.

Conclusions: Our path analyses suggest treating susceptibility and severity as an additive function. A multiplicative model without main effects – although often used – had the poorest fit. Risk perceptions influence behaviour by influencing attitudinal and self-efficacy beliefs. Addressing risk perceptions in health communication programs is relevant when the purpose is to increase awareness and to influence attitudes and self-efficacy.  相似文献   
965.
For those planning interventions based on social cognition models, it is usually not clear what impact on behaviour will follow from attempts to change the cognitions specified in these models. We describe a statistical simulation technique to assess the likely impact of health promotion targeting Theory of Reasoned Action (TRA)-based predictors of condom use. We apply regression-based simulation techniques to data from the SHARE project (n?=?756 Scottish adolescents) to assess the potential impact of changes in cognitions on condom use. Results support the predictive utility of TRA-based models of psychological antecedents of condom use but also provide a cautionary warning about the magnitude of behaviour change likely to be achieved by interventions based on such models.  相似文献   
966.
Objective: We examined selected survivor characteristics to determine what factors might moderate the response to two psychosocial interventions.

Design: Seventy-one prostate cancer survivors (PCSs) were randomly assigned to either a telephone-delivered health education (THE) intervention or a telephone-delivered interpersonal counselling (TIP-C) intervention.

Measures: Psychological quality of life (QOL) outcomes included depression, negative and positive affect, and perceived stress.

Results: For three of the psychological outcomes (depression, negative affect and stress), there were distinct advantages from participating in THE. For example, more favourable depression outcomes occurred when men were older, had lower prostate specific functioning, were in active chemotherapy, had lower social support from friends and lower cancer knowledge. Participating in the TIP-C provided a more favourable outcome for positive affect when men had higher education, prostate specific functioning, social support from friends and cancer knowledge.

Conclusion: Unique survivor characteristics must be considered when recommending interventions that might improve psychological QOL in PCSs. Future research must examine who benefits most and from what components of psychosocial interventions to enable clinicians to recommend appropriate psychosocial care.  相似文献   
967.
A child version of the Iowa Gambling task was used to explore the developmental and gender differences in decision making of 4-year-olds (N?=?141). The task required children to choose between two decks: a deck with higher immediate rewards and a deck with higher future rewards. Developmental differences between young (4.0–4.5) and older (4.6–4.11) children were found, with older 4-year-olds choosing more from the deck with higher future rewards. Gender differences were found for decision-making strategy. It is suggested that these differences in approaches might account for the pattern of gender differences found in past research.  相似文献   
968.
A reversible posterior leukoencephalopathy, associated with cortical blindness, has been reported in both adults and children treated with Cyclosporine. The present study reports neuropsychological findings in a 6-year-old male, who received an allogenic bone marrow transplant and Cyclosporine treatment. Although visual acuity and neuro-opthalmological findings were normal 6 days after the onset of cortical blindness, neuropsychological findings indicated residual deficits suggestive of achromatopsia, and impairments in visuospatial perception, visual memory, resolution of figure-ground relationships, facial recognition, and visual cognitive functions requiring imagery. Thirty days after the onset of symptoms, neuropsychological findings continued to demonstrate abnormalities in the use of color to resolve form, and impaired performance on measures which required visual imagery to provide figural closure.  相似文献   
969.
Several academic traditions have addressed epistemological objectivity and/or partisanship in the study of technoscientific controversies. On the one hand, positivist and relativist scholars agree that the political commitments of the social researcher should not impinge on scientific enquiry, while on the other hand, feminist and Marxist scholars not only take stands in diverse technoscientific debates, but even claim their agendas to be more credible than those of orthodox scientists. Such perspectives stress that all research is partisan in one way or another because it involves questions of who controls, manipulates, and establishes decisions, facts, and knowledge. With this in mind, it is possible to identify different forms of partisan research including capture by participants, de facto and overt partisanship, and mercenary scholarship. These different forms of partisan scholarship are characterised by differences in the motives underlying epistemological choices of research topic and method, personal commitments to the fields studied, use of research findings in controversies, and positioning of results in wider debates. Two examples help to illustrate partisan scholarship: first, a study of new technologies for managing climate change (carbon dioxide capture and storage); and second, the construction of the new underground metro system in Athens and its accommodation of accessibility standards. Both cases entail partisan positions and raise similar concerns about the orthodox epistemological assumptions underpinning sociotechnical systems, especially when it comes to technoscientific controversies. Supporting STS partisan scholarship, therefore, enables greater social and democratic engagement with technoscientific development.  相似文献   
970.
In performance appraisals, some assessors are substantially more lenient than others. Research on this effect in appraisals involving communication and interaction between raters and ratees after the performance evaluation has taken place indicates that it may be at least partly caused by individual differences in assessor personality. However, little is known about the impact or causes of rater severity versus leniency in situations in which there is little or no contact between raters and ratees after the performance evaluation. In Study 1 (N = 174) the strength of the severity–leniency effect in this ‘no‐contact’ context is estimated and found to be similar to that reported for ‘with‐contact’ appraisals. No evidence of an association between assessor personality and assessor severity (vs. leniency) is found in the ‘no‐contact’ context. In Study 2 (N = 54) there is no evidence of an association between the fluid cognitive ability of assessors and the severity of their ratings in a no‐contact context. It is concluded that the severity versus leniency effect probably has a considerable impact on performance ratings in ‘no‐contact’ appraisal settings, but that neither rater personality nor rater cognitive ability appear to play a significant role in this.  相似文献   
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