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[Thoughts on a psychological model of optimal development].

Developmental planning and intervention involves technical decisions as well as decisions about developmental goals. The view that empirically oriented psychologists can only contribute to technical decisions is widely accepted but is seen to be open to serious question after a closer examination of some general characteristics of decision processes. It is argued that psychologists can also significantly contribute to decisions about developmental goals, especially if a "human-oriented" developmental planning is attempted, which takes human needs, interests and developmental motives into account. After regarding some basic problems in empirically substantiating hypotheses about individual needs and interests, arguments are advanced against "closed" developmental models, which are based on restrictive need-theoretical assumptions. Finally, some characteristics of an "open" model of optimal development are outlined.

Adult↗

A psychological model of mental disorder.

A coherent conceptualization of the role of psychological factors is of great importance in understanding mental disorder. Academic articles and professional reports alluding to psychological models of the etiology of mental disorder are becoming increasingly common, and there is evidence of a marked policy shift toward the provision of psychological therapies and interventions. This article discusses the relationship between biological, social, and psychological factors in the causation and treatment of mental disorder. It argues that simple biological reductionism is not scientifically justified, and also that the specific role of psychological processes within the biopsychosocial model requires further elaboration. The biopsychosocial model is usually interpreted as implying that biological, psychological, and social factors are co-equal partners in the etiology of mental disorder. The psychological model of mental disorder presented here suggests that disruption or dysfunction in psychological processes is a final common pathway in the development of mental disorder. These processes include, but are not limited to, cognitive processes. The model proposes that biological and social factors, together with a person's individual experiences, lead to mental disorder through their conjoint effects on those psychological processes. Implications for research, interventions, and policy are discussed.

Brain↗

Can psychological models bridge the gap between clinical guidelines and clinicians' behaviour? A randomised controlled trial of an intervention to influence dentists' intention to implement evidence-based practice.

OBJECTIVE: The lag between publication of evidence for clinical practice and implementation by clinicians may be decades. Research using psychological models demonstrates that changing intention is very important in changing behaviour. This study examined an intervention (rehearsing alternative actions) to change dentists' intention to implement evidence-based practice (EBP) for third molar (TM) management. DESIGN: Randomised controlled trial / postal. SETTING: Primary care. SUBJECTS AND METHODS: Dentists were randomly selected from the Scottish Dental Practice Board Register, then randomly allocated to intervention or control groups, and sent a questionnaire. The intervention group listed management alternatives to TM extraction prior to their TM extraction intention, and the control group did not. Based on psychological models for reducing a behaviour's frequency (EBP is weighted against TM extraction), prior listing of alternatives should decrease extraction intention. MAIN OUTCOME MEASURES: Intention to extract TMs. RESULTS: A total of 99 dentists - 70 Males, 29 Females; mean age = 41.42 years (SD = 8.62) participated in the study. The intervention significantly influenced intention to extract TMs, as desired. Despite similar background and knowledge of management alternatives, participants in the intervention group had significantly lower intention to extract: control group mean (SD) = 0.39 (1.99); intervention group mean (SD) = -0.78 (1.89); mean difference (SE) = 1.17 (0.42); 95% confidence interval for the difference = 0.34 to 1.99. CONCLUSION: Results suggest this intervention, which successfully influenced a proximal predictor of behaviour pertinent to dental EBP, may result in improved EBP in a service-level trial. Basing implementation interventions and trial methodology on psychological models may effectively bridge the gap between clinical guidelines and practice.

Adult↗

A cognitive-psychological model of REM dream production.

Based on the methodological assumption that cognitive-psychological study of dream processes (psychoneirics) can be pursued in like manner as in cognitive-psychological study of speech processes (psycholinguistics) and on the substantive assumption that speech and dreaming may share some common production routines, a cognitive-psychological model of dream formation is proposed. A generalized psycholinguistic model of speech production is presented, and then each sequential stage of that model is examined for its aptness to the process of dream production. It is concluded that there are major differences between speech and dream production at both the input and the output levels (message formulation in the linguistic sense is absent in the instigation of the dream; the dream itself is a multimodal perceptual simulation), but it is proposed that midrange stages of speech and dream production may be largely identical. This model is shown to be consistent with various formal properties of the dream, including its central paradox of controlled formal organization in the face of contents that may be "senseless," trivial, or obscure. The model also is shown to suggest several new research paradigms that might be employed both to test its own utility and to generate data more generally relevant to the question of how mental functions are organized during rapid eye movement sleep.

Cognition↗

Psychological models that help hospice workers perform mental status evaluations.

All hospice workers share responsibility for emotional support of patients. The effectiveness of this support depends on accurate assessments of patients 'mental and emotional status. The use of psychological models assist in understanding patients and make it easier to develop appropriate and effective interventions. Several psychological models are used to 1) assist in the spiritual care or supportive counseling of patients who seek to resolve issues or find closure in their lives; or 2) support patients who exhibit patterns of avoidance and denial, supplemented by appropriate medications.

Counseling↗

Testing a social psychological model of strategy use with students of english as a foreign language.

This replication study tested MacIntyre's Social Psychological Model of Strategy Use. Participants were 137 first-year college students (100 men and 37 women), all in their late teens or early 20s, learning English as a foreign language in a university in Taiwan. McIntyre specified three conditions for use of language-learning strategies in his model: awareness of the strategy, having a reason to use it, and not having a reason not to use it. Stepwise multiple regression analyses of data measured by Oxford's 50-item Strategy Inventory for Language Learning partially support this model because only Knowledge about the Strategy (representing the first condition) and Difficulty about Using It (representing the third condition) made significant independent contributions to the prediction of use of most of the 50 strategies. Close examination of the results poses questions about MacIntyre and Noels' thesis, as implied in their revised model, that reason to use the strategy and reason not to use the strategy are independent. The present replication suggests a need for further revision of the model. Use of methods more advanced than the multiple regression is recommended to test and refine the model.

Adolescent↗

Somatic and psychological models of common mental disorder in primary care in India.

BACKGROUND: Primary care attenders with a common mental disorder (CMD) frequently present with somatic symptoms. This study aimed to examine somatic and psychological models of CMD in primary care attenders in India. METHODS: Cross-sectional survey of attenders at two primary care clinics. Psychiatric caseness was determined on three criteria: standardized psychiatric interview (biomedical criterion), patients' self-assessment of emotional disorder (emic criterion) and health care provider diagnosis. The GHQ-12 and the PPQ, which emphasize psychological and somatic symptoms respectively, were used as screening instruments. RESULTS: Although somatic symptoms were the presenting complaints for 97% of subjects, 51% of subjects with a biomedically defined CMD had a psychological illness attribution. Patients with psychological attributions were more likely to be women, to have a longer duration of illness, to have higher CISR scores and were more likely to be recognized by the primary health care (PHC) physician. The GHQ-12 was superior to the PPQ in identifying cases of CMD against the biomedical criterion for both psychologizers and somatizers; both instruments performed equally well against the emic and care provider criteria. CONCLUSIONS: Psychological models may be acquired by patients as CMD becomes more chronic or severe, making them more likely to be detected by PHC physicians. Psychological symptoms are superior to somatic symptoms in detecting CMD. Shorter versions of the GHQ have comparable discriminating abilities to the 12-item version and offer the practical advantage of brevity, which may make them more acceptable to PHC physicians as a clinical screening tool.

Adolescent↗

Cognition in mania and depression: psychological models and clinical implications.

Affective disorders, including bipolar disorder and major depressive disorder, are highly prevalent throughout the world and are extremely disabling. Diagnostic and Statistical Manual criteria and psychological models strongly implicate cognitive dysfunctions as being integral to our understanding of these disorders. We review the findings from studies that have used neurocognitive tests and functional imaging techniques to explore abnormal cognition in affective disorders. In particular, we highlight the evidence for cognitive dysfunctions that persist into full clinical remission, and the recent trend toward the use of "hot" processing tasks, involving emotionally charged stimuli, as a means of differentiating between the cognitive underpinnings of mania and depression. The clinical relevance of these developments is discussed.

Affect↗

Predicting older adults' maintenance in exercise participation using an integrated social psychological model.

Little is known about the predictors of maintenance in organized exercise programmes. The aim of this study was to investigate the behavioral predictors of maintenance of exercise participation in older adults, using an integrated social psychological model. To this end, we carried out a prospective cohort study (n = 1,725; age 50 years or older) involving 10 different types of exercise programmes, with measurements at baseline and after 6 months. Predictors of intention to continue participating and the actual maintenance of exercise participation in the exercise programme were assessed using a step-wise logistic regression model. Significant odds ratios (ORs) predicting the intention to continue with the exercise programme were found for female sex, younger age, being married, being a non-smoker, being in paid employment, having a positive attitude towards exercise and having a high self-efficacy at baseline. Significant ORs predicting actual maintenance of exercise participation were short lapses, absence of lapses, high intention at baseline, high perceived quality of the programme, positive attitude at baseline and few risk situations at baseline. In order to promote maintenance of exercise participation for older adults, effort should be taken to prevent lapses, to help people cope with risk situations for lapses, to improve the attitude towards exercise participation and to improve the quality of the programme.

Aged↗

Sex, drugs and escape: a psychological model of HIV-risk sexual behaviours.

The lack of an effective HIV vaccine or other biomedical intervention means that behavioural change will continue to be critical to the prevention of HIV infection. Despite near universal knowledge of HIV and sexual safety, and widespread intentions to be safe, rates of unprotected sex and HIV sero-conversion remain high among gay and bisexual men. Explanatory models that link risk-taking and prevention to rational processes such as knowledge, social norms, behavioural intentions, or perceived vulnerability to infection, cannot fully account for the continued risk behaviours observed in virtually all cohorts of gay men. We feel that innovative conceptions of risk and risk prevention are needed, that emphasize non-rational, affective processes in risk-taking and decision-making. Consistent with recent models from social psychology, we propose that for many people sexual risk does not stem from a lack of community norms or personal standards, but from a desire to escape cognitive awareness of very rigorous norms and standards. Being self-aware of HIV risk arouses anxiety and precludes highly-desired activities: fatigue, fatalism, or other negative affect over HIV may lead people to 'cognitively disengage' within the sexual situation, and not to follow their norms or intentions toward safety. We propose that both substance use and the approach of high stimulation or other sexual settings facilitates this cognitive disengagement, wherein people enact 'automatic' sexual scripts and/or become more responsive to external pressures toward risk. We briefly review current psychosocial models of HIV risk behaviour, outline a cognitive escape model with particular emphasis on substance use as a behavioural risk factor, and discuss implications of an escape model for behavioural interventions among gay and bisexual men.

Bisexuality↗

Supervised interpretation of echocardiograms with a psychological model of expert supervision.

We have developed a collaborative scheme that facilitates active human supervision of the binary segmentation of an echocardiogram. The scheme complements the reliability of a human expert with the precision of segmentation algorithms. In the developed system, an expert user compares the computer generated segmentation with the original image in a user friendly graphics environment, and interactively indicates the incorrectly classified regions either by pointing or by circling. The precise boundaries of the indicated regions are computed by studying original image properties at that region, and a human visual attention distribution map obtained from the published psychological and psychophysical research. We use the developed system to extract contours of heart chambers from a sequence of two dimensional echocardiograms. We are currently extending this method to incorporate a richer set of inputs from the human supervisor, to facilitate multi-classification of image regions depending on their functionality. We are integrating into our system the knowledge related constraints that cardiologists use, to improve the capabilities of our existing system. This extension involves developing a psychological model of expert reasoning, functional and relational models of typical views in echocardiograms, and corresponding interface modifications to map the suggested actions to image processing algorithms.

Algorithms↗

Interventions to prevent weight gain: a systematic review of psychological models and behaviour change methods.

OBJECTIVE: To identify and review published interventions aimed at the prevention of weight gain. DESIGN: A systematic review of published interventions aimed at the prevention of weight gain. METHODS: Search strategies-we searched eight databases, manually checked reference lists and contacted authors. Inclusion and exclusion criteria-studies of any design, in which participants were selected regardless of weight or age, were included. Interventions targeting a specific subgroup, multifactorial interventions, interventions aimed at weight loss, and those with an ambiguous aim were excluded. Data extraction-data were extracted on behaviours targeted for change, psychological model, behaviour change methods and modes of delivery, methodological quality, characteristics of participants, and outcomes related to body weight and self-reported diet and physical activity. Classification and validation-a taxonomy of behaviour change programmes was developed and used for classification of underlying model, behaviour change methods, and modes of delivery. The data extraction and subsequent classification were independently validated. RESULTS: Eleven publications were included, describing five distinct interventions in schools and four in the wider community. Where diet and physical activity were described, positive effects were usually obtained, but all were measured by self-report. Effects on weight were mixed but follow-up was generally short. Smaller effects on weight gain were found among low-income participants, students and smokers. Many participants in the community-based studies were overweight or obese. Study dropout was higher among thinner and lower-income subjects. CONCLUSION: Interventions to prevent weight gain exhibited various degrees of effectiveness. Definite statements about the elements of the interventions that were associated with increased effect size cannot be made as only one of the five studies that involved an RCT design reported a significant effect on weight. This intervention involved a correspondence programme and a mix of behaviour change methods including goal setting, self-monitoring and contingencies. Future interventions might be more effective if they were explicitly based on methods of behaviour change that have been shown to work in other contexts. Effective interventions would be more easily replicated if they were explicitly described. Effectiveness might be more precisely demonstrated if more objective measures of physical activity and diet were used, and if the follow-up was over a longer period. International Journal of Obesity (2000) 24, 131-143

Behavior Therapy↗

Adherence to structured physical exercise in overweight and obese subjects: a review of psychological models.

Regular physical exercise is a widely accepted means of reducing mortality and improving a number of health outcomes, which is also efficacious in the treatment of obesity. Unfortunately, despite the evidence of favourable short- and long-term effects, the results seem to be affected by a lack of adherence, particularly over the long term. It is very important to evaluate and predict good adherence in order to be able to assess the real efficacy of physical activity in the treatment of various diseases. In this paper, we describe most of the psychological models used to evaluate such adherence, and investigate the physiological and psychological bases of physical activity, the most suitable type of exercise for obese patients and some useful strategies for ensuring long-term adherence.

Exercise↗