All for one or some for all? Evaluating informative hypotheses using multiple <Emphasis Type="Italic">N</Emphasis> = 1 studies

Analyses are mostly executed at the population level, whereas in many applications the interest is on the individual level instead of the population level. In this paper, multiple N =?1 experiments are considered, where participants perform multiple trials with a dichotomous outcome in various conditions. Expectations with respect to the performance of participants can be translated into so-called informative hypotheses. These hypotheses can be evaluated for each participant separately using Bayes factors. A Bayes factor expresses the relative evidence for two hypotheses based on the data of one individual. This paper proposes to “average” these individual Bayes factors in the gP-BF, the average relative evidence. The gP-BF can be used to determine whether one hypothesis is preferred over another for all individuals under investigation. This measure provides insight into whether the relative preference of a hypothesis from a pre-defined set is homogeneous over individuals. Two additional measures are proposed to support the interpretation of the gP-BF: the evidence rate (ER), the proportion of individual Bayes factors that support the same hypothesis as the gP-BF, and the stability rate (SR), the proportion of individual Bayes factors that express a stronger support than the gP-BF. These three statistics can be used to determine the relative support in the data for the informative hypotheses entertained. Software is available that can be used to execute the approach proposed in this paper and to determine the sensitivity of the outcomes with respect to the number of participants and within condition replications.     

Factors Influencing the Maternal Life Balance of Flemish Mothers,a Cross-Sectional Study

Applied Research in Quality of Life - This cross-sectional study examined the levels of maternal life balance and its influencing factors. The sample was composed of 731 Flemish mothers who...     

Cognitive labor shapes the desire for social and monetary compensation

When do people want something back for their mental labor? Based on equity theory, we propose that conscious experiences of success and effort—which emerge during cognitive work—shape people’s subsequent desire for social and monetary rewards. We examined this idea in a series of experiments, in which participants carried out a cognitive task, in which we manipulated task difficulty (easy vs. difficult) and performance feedback (high vs. low) within subjects. After each trial of this task, we probed people’s desire for compensation, in terms of social appreciation or money. Findings were in line with the entitlement hypothesis, which assumes that the experience of success can cause people to feel entitled to money. However, we found only indirect support for the effort compensation hypothesis, which assumes that the feeling of effort increases the subsequent desire for compensation, and no support for the intrinsic reward hypothesis, which assumes that people desire less social appreciation after already having experienced success. When considered together, our results suggest that labor-related feelings (of success and effort) shape people’s subsequent desire for money and social appreciation in several ways. These findings have potential implications for the effective use of performance feedback in work contexts.

     

Family interventions in psychosis: a scale to measure therapist adherence

The efficacy of family interventions in psychosis is well documented. UK and USA schizophrenia treatment guidelines advocate the practice of family interventions within routine clinical services. However, less attention has been paid to the study of treatment fidelity and the tools used in its assessment. This study reports the inter-rater reliability of a new scale: Family Intervention in Psychosis-Adherence Scale (FIPAS). This measure is designed to assess therapist adherence to the Kuipers et al . (2002) family intervention in psychosis treatment manual. Reliability ratings were based on a sample of thirteen audiotapes drawn from a randomized controlled trial of family intervention. The results indicated that the majority of items of the FIPAS had acceptable levels of inter-rater reliability. The findings are discussed in terms of their implications for the training and monitoring of the effectiveness of practitioners for family interventions in psychosis.     

Beauty, A Road To The Truth

In this article I give a naturalistic-cum-formal analysis of therelation between beauty, empirical success, and truth. The analysis is based on the onehand on a hypothetical variant of the so-called `mere-exposure effect' which has been more orless established in experimental psychology regarding exposure-affect relationshipsin general and aesthetic appreciation in particular (Zajonc 1968; Temme 1983; Bornstein 1989;Ye 2000). On the other hand it is based on the formal theory of truthlikeness andtruth approximation as presented in my From Instrumentalism to Constructive Realism (2000).The analysis supports the findings of James McAllister in his beautifulBeauty and Revolution in Science (1996), by explaining and justifying them.First, scientists are essentially right in regarding aesthetic criteria useful for empiricalprogress and even for truth approximation, provided they conceive of them as less hard thanempirical criteria. Second, the aesthetic criteria of the time, the `aesthetic canon', maywell be based on `aesthetic induction' regarding nonempirical features of paradigms of successfultheories which scientists have come to appreciate as beautiful. Third, aestheticcriteria can play a crucial, schismatic role in scientific revolutions. Since they may well be wrong, they may, in the hands of aesthetic conservatives, retard empirical progress and hence truth approximation, but this does not happen in the hands of aesthetically flexible, `revolutionary' scientists. We may find totallyopposite things beautiful: a simplemathematical principle as well as a series of unrepeatable complex contingencies. It is a matter of psychology.(Stephen Jay Gould, translated passage from (Kayzer 2000, 30)).     

Intention formation induces episodic inhibition of distracting stimuli

In two experiments we show that (a) distracting stimuli are inhibited after intention formation, (b) this inhibition is episodic rather than semantic in nature, and (c) inhibition of distracting stimuli is terminated once intentions are completed. In both experiments participants were asked to form an intention to press the space bar in response to six cues (i.e. intention cues). After intention formation we measured accessibility of intention cues, of words that are semantically related to the intention cues (i.e. related cues) and of semantically unrelated words (i.e. control cues). In Experiment 1, we obtained slower responses towards related cues compared with both intention cues and control cues in a recognition task, but not in a lexical decision task. In Experiment 2, we showed that inhibition of related cues is terminated after intention completion. Together these results are consistent with theorizing that inhibition of distracting (i.e. related) stimuli is functional for completing previously formed intentions, and give insight in the nature of inhibitory processes during goal pursuit.     

Reconstructing Complex Analogy Argumentation in Judicial Decisions: A Pragma-Dialectical Perspective

Empirical research in the field of legal interpretation shows that, in many cases, analogy argumentation is complex rather than simple. Traditional analytical approaches to analogy argumentation do not explore that complexity. In most cases analogy argumentation is reconstructed as a simple form of argumentation that consists of two premises and a conclusion. This article focuses on the question of how to analyze and evaluate complex analogy argumentation. It is shown how the pragma-dialectical approach provides clues for analyzing complex analogy argumentation and how the criteria for evaluating analogy argumentation can be used to reconstruct these types of complex analogy argumentation in Dutch case law. The critical questions in the argumentation scheme do not only serve as a tool for analyzing arguments justifying analogy argumentation, but are also helpful in analyzing arguments against a specific analogy argumentation.     

A new perspective on human reward research: How consciously and unconsciously perceived reward information influences performance

The question of how human performance can be improved through rewards is a recurrent topic of interest in psychology and neuroscience. Traditional, cognitive approaches to this topic have focused solely on consciously communicated rewards. Recently, a largely neuroscience-inspired perspective has emerged to examine the potential role of conscious awareness of reward information in effective reward pursuit. The present article reviews research employing a newly developed monetary-reward-priming paradigm that allows for a systematic investigation of this perspective. We analyze this research to identify similarities and differences in how consciously and unconsciously perceived rewards impact three distinct aspects relevant to performance: decision making, task preparation, and task execution. We further discuss whether conscious awareness, in modulating the effects of reward information, plays a role similar to its role in modulating the effects of other affective information. Implications of these insights for understanding the role of consciousness in modulating goal-directed behavior more generally are discussed.