Structuring decision problems and the ‘bias heuristic’

This paper examines our understanding of the decomposition of immediate acts when structuring decision problems. Seven different types of uncertainties are identified, and four of these are shown to be taken explicitly into account in models within the province of decision theory, described in terms of four interlocking systems interfaced with semantic memory (a core act-event system, and systems buffering utilities, probabilities and events, respectively). Requisite decision modeling is shown to require that the remaining three types of uncertainty (procedural uncertainty; how the decision maker will feel about subsequent acts; agency for changing subsequent states of the world) are also resolved. Methods for ‘fixing’ structure are discussed in terms of aiming at a common understanding about the ‘small world’ in which a decision problem is located. Difficulties in resolving uncertainties in doing this are described. An alternative approach, common in studies invoking ‘behavioural decision theory’ is contrasted: imposing structure, assuming common understanding. The latter approach is shown to involve (i) the ‘naturalisation’ of the small world in which the decision problem is located, and (ii) the utilisation of normative models as ‘ideal types’, leading to the use of the ‘bias’ argument in discussing subjects' performance in decision tasks. Using this argument reflexively, the operation of the ‘bias heuristic’ is identified in a survey of published papers referencing this approach to the study of decision making. Effects identified are: availability of tasks, subjects and explanations; representativeness of findings; and anchoring and adjustment of explanations. Implications for practice are discussed throughout the paper.     

Negative life events and depressive symptoms in late life: Buffering effects of parental and partner bonding?

The buffering function of parental and partner bonding in the relationship between negative life events and depressive symptoms at old age was examined. A community sample of 194 people aged 65 years and older was interviewed. In particular, the control dimension of both parental and partner bonding seems to be of importance in relation to elderly depression: More psychological control is related to higher depression scores, and low partner control seems to work as a protective mechanism when negative life events are faced. Developing prevention and intervention programs aimed at optimizing bonding relationships throughout life seems advisable.     

Therapieabbrüche in der stationären Psychotherapie

This article focuses on the patients’ view of the causes and consequences of premature therapy termination in inpatient psychosomatic setting. In this study, drop-out patients and non-drop-out patients were questioned in semi-structured phone interviews (n=62). The causes of early termination are seen in this study to be connected with an internal, somatic concept of disease, discontent with treatment, and social interaction problems in the hospital. In 80% of the examined cases more than two causes were reported. Consequently, early termination of treatment can be considered as an outcome of multifactorial influences. Furthermore, a group of “inner drop-outs” has been identified within the non-drop-out patients. Despite high discontent, these patients remained in treatment because they often feared possible negative consequences of early treatment termination. Both drop-outs and inner drop-outs scored lower in outcome analysis than the remaining patients. This study points to problem areas that can help identify potential drop-out patients.     

Medical Psychology in Brazil

In 1962, Psychology was officially accorded professional status in Brazil. Since then the profession has been undergoing continuous development, but the training of psychologists still suffers from flaws that are reflected in the public heath service, SUS (Sistema Único de Saúde). However, SUS itself is also open to criticism: the service is badly distributed, the number of posts for psychologists is limited, and working conditions are poor. Nevertheless, many positive changes are occurring. These include plans to alter academic training to better meet the needs of the Brazilian population, an expansion of the roles played by psychologists in the health service, and increasing research activity. These and many other changes suggest that the progressive evolution of the profession in Brazil will continue.     

Stimulus-response incompatibility eliminates inhibitory cueing effects with saccadic but not manual responses

There are thought to be two forms of inhibition of return (IOR) depending on whether the oculomotor system is activated or suppressed. When saccades are allowed, output-based IOR is generated, whereas input-based IOR arises when saccades are prohibited. In a series of 4 experiments, we mixed or blocked compatible and incompatible trials with saccadic or manual responses to investigate whether cueing effects would follow the same pattern as those observed with more traditional peripheral onsets and central arrows. In all experiments, an uninformative cue was displayed, followed by a cue-back stimulus that was either red or green, indicating whether a compatible or incompatible response was required. The results showed that IOR was indeed observed for compatible responses in all tasks, whereas IOR was eliminated for incompatible trials—but only with saccadic responses. These findings indicate that the dissociation between input- and output-based forms of IOR depends on more than just oculomotor activation, providing further support for the existence of an inhibitory cueing effect that is distinct to the manual response modality.