Multivariate discriminant analysis of EEG power spectra in acute schizophrenic patients and healthy probands

The electroencephalogram (EEG) during information processing is influenced by specific changes in brain electrical activity. Based on the theory of a disturbed information processing in schizophrenics we analysed auditory stimulus induced EEG changes by Fast Fourier Transformation. The most important of the significant stimulation dependent EEG power changes were measured in the 0.5-3.5 Hz and 10-13.5 Hz frequency bands in the left parietal lead. In a multivariate analysis the separation of the subjects examined into acute schizophrenics and normals was incorrect in only 21% of the cases (resubstitution rate): using the pi-method an error of 31% was estimated.     

Pr?dikative klassen

We consider certain predicative classes with respect to their bearing on set theory, namely on its semantics, and on its ontological power. On the one hand, our predicative classes will turn out to be perfectly suited for establishing a nice hierarchy of metalanguages starting from the usual set theoretical language. On the other hand, these classes will be seen to be fairly inappropriate for the formulation of strong principles of infinity. The motivation for considering this very type of classes is a reasonable philosophy of set theory. Familiarity is assumed only with basic concepts of both set theory and its philosophy.     

Life choices well made: How selective control strategies relate to career and partner decision processes

There are many benefits of applying control strategies that foster engagement in pursuing selected goals (i.e., selective control strategies). We examined one such benefit by investigating how use of selective control strategies when making important real-life decisions helps young adults make satisfactory choices in the areas of work and love. In a prospective longitudinal study, 60 students who intended to choose a college major and/or find a romantic partner initially reported on their control strategies. Subsequently, we assessed changes in the perceived attractiveness of considered majors and partners during decision making and our participants’ satisfaction with their choices. As expected, use of selective control strategies predicted greater choice satisfaction. This association was mediated by the greater perceived attractiveness of chosen majors or partners, which increased during decision making. Applying selective control strategies during real-life decisions thus leads to more favorable evaluations of the resulting choices, which can ease their implementation.     

Coherence shifts in probabilistic inference tasks

The fast‐and‐frugal heuristics approach to probabilistic inference assumes that individuals often employ simple heuristics to integrate cue information that commonly function in a non‐reciprocal fashion. Specifically, the subjective validity of a certain cue remains stable during the application of a heuristic and is not changed by the presence or absence of another cue. The parallel constraint satisfaction (PCS) model, in contrast, predicts that information is processed in a reciprocal fashion. Specifically, it assumes that subjective cue validities interactively affect each other and are modified to coherently support the favored choice. Corresponding to the model's simulation, we predicted the direction and the size of such coherence shifts. Cue validities were measured before, after (Experiment 1), and during judgment (Experiments 2 and 3). Coherence shifts were found in environments involving real‐world cue knowledge (weather forecasts) and in a domain for which the application of fast‐and‐frugal heuristics has been demonstrated (city‐size tasks). The results indicate that subjective cue validities are not fixed parameters, but that they are interactively changed to form coherent representations of the task. Copyright © 2009 John Wiley & Sons, Ltd.     

Family systems consultation with an athletic team: A case study of themes

Abstract

Utilizing family therapy theory and techniques to consult with businesses and other organizations has grown in popularity. In recent years, systems consultation has also been utilized with athletic teams (Schindler-Zimmerman, Washle, & Rotinsky, 1990; Zimmerman & DeVoe, 1993; Zimmennan & Protinsky, 1993; Zimmennan, 1991, 1993). The literature on systems consultation and athletic teams has primarily focused on interventions, guidelines for consulting with athletic teams, common concerns of athletes and specific theories utilized. This article presents themes which emerged from a consultation case study with a university women's athletic team. The themes emerged from videotape analysis using qualitative methodology. This presentation of themes will give the reader a flavor of systemic consultation with athletic teams including typical issues, team structure, and the similarities between families and sports teams.     

Nostalgic bonding: exploring the role of nostalgia in the consumption experience

The recently awakened awareness of the past has produced a flurry of research directed towards understanding the nostalgic aspects of the human condition, towards investigating the role of nostalgia in the lives of consumers, and towards the application of such knowledge to the design of marketing strategies. With rare exceptions, however, such research has pursued a quantitative survey‐based approach to establishing the chronology‐related and personality‐driven aspects of nostalgia. To explore the nature and types of nostalgic bonding in greater depth, the present study pursues an interpretive approach to understanding the role of nostalgia in the consumption experience. Specifically, it applies a collective approach to subjective personal introspection to draw inferences concerning the key types of nostalgic experience. Copyright © 2003 Henry Stewart Publications.     

Mastery matters most: How mastery and positive relations link attachment avoidance and anxiety to negative emotions

Attachment avoidance and anxiety are associated with negative emotions. However, the mechanisms underlying these associations are not fully understood. We investigated environmental mastery and positive relations with others as two mechanisms behind the attachment–emotion link in a sample of 343 adults. As predicted, attachment avoidance and anxiety were related to greater fear, hostility, envy and depression through lower mastery. Contrary to our hypothesis, positive relations mediated only the attachment–depression link. In addition, by adopting a moderated mediation approach, we were able to show that mastery mattered most for individuals high on avoidance: The indirect effect of avoidance through lack of mastery on fear, hostility and depression (but not on envy) increased with higher avoidance scores. Contrary to our predictions, poor relationships did not matter more as sources of negative emotions as anxiety increased. These findings underscore that the emotional life of avoidantly attached individuals is especially jeopardised by poor mastery.     

Changes of life satisfaction in the transition to retirement: a latent-class approach

Contradictory positions have been advanced as to whether retirement has negative, positive, or no effects on subjective well-being. The authors investigated changes in life satisfaction in 1,456 German retirees. Using latent growth mixture modeling, the authors found 3 groups of people who experienced retirement differently. In Group 1, satisfaction declined at retirement but continued on a stable or increasing trajectory thereafter. Group 2 demonstrated a large increase in satisfaction at retirement but overall declining satisfaction. In Group 3, satisfaction showed a temporary very small increase at retirement. Groups differed by retirement age, gender, socioeconomic status, marital status, health, unemployment before retiring, and region. Thus, retirement is not a uniform transition, and resource-rich individuals are less likely to experience retirement-related change in satisfaction.     

Some Notes on Truths and Comprehension

In this paper we study several translations that map models and formulae of the language of second-order arithmetic to models and formulae of the language of truth. These translations are useful because they allow us to exploit results from the extensive literature on arithmetic to study the notion of truth. Our purpose is to present these connections in a systematic way, generalize some well-known results in this area, and to provide a number of new results. Sections 3 and 4 contain some recursion- and proof-theoretic results about Kripke-style fixed-point theories of truth. Section 5 shows how to derive full second-order arithmetic from principles of truth. Section 6 investigates the proof-theoretic strength of disquotation without an arithmetical base theory.     

Perceptions of the cognitive compensation and interpersonal enjoyment functions of collaboration among middle-aged and older married couples

Perceptions of cognitive compensation and interpersonal enjoyment of collaboration were examined in three hundred middle-aged and older couples who completed measures of perceptions of collaboration, cognitive ability, marital satisfaction, an errand task and judged their spouse's affiliation. Older adults (especially men) endorsed cognitive compensation and interpersonal enjoyment and reported using collaboration more frequently than middle-aged adults. Greater need for cognitive compensation was related to lower cognitive ability only for older wives. Greater marital satisfaction was associated with greater interpersonal enjoyment. These two functions related to reports of more frequent use of collaboration and perceptions of spousal affiliation in a collaborative task.