Portfolio Decisions and Brain Reactions via the CEAD method

Decision making can be a complex process requiring the integration of several attributes of choice options. Understanding the neural processes underlying (uncertain) investment decisions is an important topic in neuroeconomics. We analyzed functional magnetic resonance imaging (fMRI) data from an investment decision study for stimulus-related effects. We propose a new technique for identifying activated brain regions: cluster, estimation, activation, and decision method. Our analysis is focused on clusters of voxels rather than voxel units. Thus, we achieve a higher signal-to-noise ratio within the unit tested and a smaller number of hypothesis tests compared with the often used General Linear Model (GLM). We propose to first conduct the brain parcellation by applying spatially constrained spectral clustering. The information within each cluster can then be extracted by the flexible dynamic semiparametric factor model (DSFM) dimension reduction technique and finally be tested for differences in activation between conditions. This sequence of Cluster, Estimation, Activation, and Decision admits a model-free analysis of the local fMRI signal. Applying a GLM on the DSFM-based time series resulted in a significant correlation between the risk of choice options and changes in fMRI signal in the anterior insula and dorsomedial prefrontal cortex. Additionally, individual differences in decision-related reactions within the DSFM time series predicted individual differences in risk attitudes as modeled with the framework of the mean-variance model.     

A longitudinal person-centred approach to the job demands-control model

We used a longitudinal design and a person-centred methodology to test the strain and learning hypotheses of the job demands–control model among Finnish employees (n = 926), who were followed-up at three time points covering a period of 2 years (2008–2010). First, we identified longitudinal subgroups in demands and control across three measurement points. Second, we examined how these subgroups differed in strain (job exhaustion) and motivation-related outcomes (vigour at work, work–family enrichment). Growth mixture modelling revealed four subgroups: “stable high strain”, “stable low strain”, “increasing control”, and “decreasing control”. The stable high- and low-strain subgroups also differed in the outcomes studied (exhaustion, work–family enrichment) as suggested by the demands–control model. The findings also suggest that job control is subject to changes over time and that these changes are likely to be associated with changes in employee outcomes. Malleability of job control should be kept in mind in job stress interventions, likewise the fact that some employees suffer from chronic job stress.     

Altered behavioral and neural responsiveness to counterfactual gains in the elderly

Counterfactual information processing refers to the consideration of events that did not occur in comparison to those actually experienced, in order to determine optimal actions, and can be formulated as computational learning signals, referred to as fictive prediction errors. Decision making and the neural circuitry for counterfactual processing are altered in healthy elderly adults. This experiment investigated age differences in neural systems for decision making with knowledge of counterfactual outcomes. Two groups of healthy adult participants, young (N = 30; ages 19–30 years) and elderly (N = 19; ages 65–80 years), were scanned with fMRI during 240 trials of a strategic sequential investment task in which a particular strategy of differentially weighting counterfactual gains and losses during valuation is associated with more optimal performance. Elderly participants earned significantly less than young adults, differently weighted counterfactual consequences and exploited task knowledge, and exhibited altered activity in a fronto-striatal circuit while making choices, compared to young adults. The degree to which task knowledge was exploited was positively correlated with modulation of neural activity by expected value in the vmPFC for young adults, but not in the elderly. These findings demonstrate that elderly participants’ poor task performance may be related to different counterfactual processing.     

VQone MATLAB toolbox: A graphical experiment builder for image and video quality evaluations

This article presents VQone, a graphical experiment builder, written as a MATLAB toolbox, developed for image and video quality ratings. VQone contains the main elements needed for the subjective image and video quality rating process. This includes building and conducting experiments and data analysis. All functions can be controlled through graphical user interfaces. The experiment builder includes many standardized image and video quality rating methods. Moreover, it enables the creation of new methods or modified versions from standard methods. VQone is distributed free of charge under the terms of the GNU general public license and allows code modifications to be made so that the program’s functions can be adjusted according to a user’s requirements. VQone is available for download from the project page (http://www.helsinki.fi/psychology/groups/visualcognition/).     

The Fantasy Questionnaire: A Measure to Assess Creative and Imaginative Fantasy

This article reports the construction and validation of a comprehensive self-report measure of fantasy. Unlike previous measures of fantasy, which focus on psychopathology, we conceive fantasy as a trait with positive connotation. Principal component analysis (N = 318) and confirmatory factor analyses (N = 345) were conducted using 2 sociodemographically diverse samples. The results provided support for a 2-factor conceptualization of the construct, with the dimensions imaginative fantasy and creative fantasy. Imaginative fantasy refers to vivid imagination and absorption in these images and daydreams. Creative fantasy refers to the activity of using fantasy to create new ideas. The trait measure showed good internal consistency, test–retest reliability, discriminant and convergent construct validity, as well as incremental validity. Moreover, in 3 behavioral studies, we put fantasy scores in relationship with behavioral data to provide further proof of validity. A comprehensive measure of fantasy can contribute to our understanding of individual differences in inner experiences, creative processes, and problem solving.     

Power Evangelism in a Protestant Context? Reflections after a Workshop in Samosir/Indonesia

This article discusses how the neo‐Pentecostal concept of power evangelism, read from a liberation perspective, might be useful to contextualize evangelism in the Toba Batak region of Samosir. In a situation where evangelistic preaching follows an evangelical forensic paradigm but Christians turn to traditional religious rituals for blessing, healing, and protection, a new approach is needed. Preaching and liturgies informed by a power paradigm might resolve the problem of syncretism, but important theological questions need to be clarified.     

The Development of Implicit Epistemologies During Early and Middle Adulthood

This study examined the development of implicit epistemologies of Finnish adults during the last ten years. It was hypothesized that specific adult experiences are stimulating for development. Moreover, a person's exploratory orientation was hypothesized to be related to development. Kitchener and King's model and method of Reflective Judgment provided tools to study adolescents' and adults' epistemologies and their possible development. Participants (N = 59) were given initial (1986–1988) and follow-up (1993–1994) Reflective Judgment interviews. The age range was from 24–50 years in the follow-up groups. The Reflective Judgment mean stage scores clearly increased during the two study periods (M₁ = 4.64,M₂ = 5.10; F(1, 58) = 32.82, p = .000). Education, in particular education beyond a person's primary profession/occupation, was a strong predictor of development. Also, encountering diversity and exploratory orientation were related to development, but their connections were more complicated. No gender differences were found. The results support the idea that positive changes in thinking and reasoning take place during adulthood.     

Genetic Information,Rights, and Autonomy

Rights, autonomy, privacy, and confidentialityare concepts commonly used in discussionsconcerning genetic information. When theseconcepts are thought of as denoting absolutenorms and values which cannot be overriden byother considerations, conflicts among themnaturally occur.In this paper, these and related notions areexamined in terms of the duties and obligationsmedical professionals and their clients canhave regarding genetic knowledge. It issuggested that while the prevailing idea ofautonomy is unhelpful in the analysis of theseduties, and the ensuing rights, an alternativereading of personal self-determination canprovide a firmer basis for ethical guidelinesand policies in this field.