From Boulder to Stockholm in 70 Years: Single Case Experimental Designs in Clinical Research

The Psychological Record - With the objective of increasing the magnitude of treatment effects in behavioral health, there is steadily growing interest in tailoring assessments and interventions to...     

Mindful social inferences: Decentering decreases hostile attributions

While research indicates that mindfulness can benefit individual well-being, less is known about its potential impact in the interpersonal domain. In the current research, we examined whether a central element of mindfulness—decentering—decreases hostile attributions in ambiguous social situations. We hypothesized that decentering from experiences—observing and considering them as mental events that arise and disappear—hampers the development of hostile attributions. A series of three laboratory studies, two of which were high-powered and pre-registered, demonstrated that decentering decreases hostile attribution in response to ambiguous social scenarios as compared to immersion instructions, and as compared to baseline. Additionally, the results suggest that decentering may be particularly beneficial in reducing hostile attribution bias among participants high in trait rumination. The current findings provide initial insights into the effect of decentering on the development of hostile attribution bias, and the association between mindfulness and interpersonal responses more generally.     

You are not alone – adolescents’ experiences of participation in a structured skills training group for ADHD

Little is known about how adolescents with attention deficit/hyperactivity disorder (ADHD) experience participating in group therapy, an important factor to consider when developing treatment methods for this age group. This study aimed to explore how adolescents with ADHD experience participating in a structured skills training group program based on dialectical behavioral therapy. Semi-structured interviews were conducted with 20 adolescents (15–18 years of age) with ADHD after participating in a structured skills training group. The interviews were transcribed verbatim and qualitative content analysis were used to analyze the text. The participants emphasized the value of meeting other adolescents with ADHD and the opportunity to exchange experiences, strategies and tips. Participating in the group treatment made the adolescents realize that they were not alone, and feelings of togetherness and an increased acceptance of themselves were described. The participants associated the treatment with elevated knowledge and understanding, for example, about ADHD, their own functioning and helpful strategies. They also described emotional and behavioral changes, such as higher self-esteem, fewer inter-personal conflicts and improved concentration. Activating and experiential exercises were considered important elements of the treatment, and the participants expressed a need for a variation of exercises, as well as more time for practicing skills, discussions and breaks. The results indicate that the group format add an extra value to the treatment and that the use of an active approach throughout the treatment is of importance for this group of patients.     

Minority leadership, science, symbols, and the media: The Belgian Islam debate and its relevance for other countries in Europe

This article discusses the processes that occurred in Belgium during the period of 1989–2000 in the constructive areas of minority policy decision-making regarding the search for a representative and legitimate partner to represent Muslims vis-à-vis the State: minority leadership, the administration, the academic community, the great social symbolic events, and the media. It concludes with the political decision-making process itself. The conclusions refer to the interpretation of change in terms of continuity and discontinuity, and to the means of coping with historical ethnic otherness. Comparisons are made with other European countries.     

Possible worlds semantics: A research program that cannot fail?

Providing a possible worlds semantics for a logic involves choosing a class of possible worlds models, and setting up a truth definition connecting formulas of the logic with statements about these models. This scheme is so flexible that a danger arises: perhaps, any (reasonable) logic whatsoever can be modelled in this way. Thus, the enterprise would lose its essential tension. Fortunately, it may be shown that the so-called incompleteness-examples from modal logic resist possible worlds modelling, even in the above wider sense. More systematically, we investigate the interplay of truth definitions and model conditions, proving a preservation theorem characterizing those types of truth definition which generate the minimal modal logic.     

Reduced K+ Channel Inactivation, Spike Broadening, and After-Hyperpolarization in Kvβ1.1-Deficient Mice with Impaired Learning

A-type K⁺ channels are known to regulate neuronal firing, but their role in repetitive firing and learning in mammals is not well characterized. To determine the contribution of the auxiliary K⁺ channel subunit Kvβ1.1 to A-type K⁺ currents and to study the physiological role of A-type K⁺ channels in repetitive firing and learning, we deleted the Kvβ1.1 gene in mice. The loss of Kvβ1.1 resulted in a reduced K⁺ current inactivation in hippocampal CA1 pyramidal neurons. Furthermore, in the mutant neurons, frequency-dependent spike broadening and the slow afterhyperpolarization (sAHP) were reduced. This suggests that Kvβ1.1-dependent A-type K⁺ channels contribute to frequency-dependent spike broadening and may regulate the sAHP by controlling Ca²⁺ influx during action potentials. The Kvβ1.1-deficient mice showed normal synaptic plasticity but were impaired in the learning of a water maze test and in the social transmission of food preference task, indicating that the Kvβ1.1 subunit contributes to certain types of learning and memory.     

Shape equivalence under perspective and projective transformations

When a planar shape is viewed obliquely, it is deformed by a perspective deformation. If the visual system were to pick up geometrical invariants from such projections, these would necessarily be invariant under the wider class of projective transformations. To what extent can the visual system tell the difference between perspective and nonperspective but still projective deformations of shapes? To investigate this, observers were asked to indicate which of two test patterns most resembled a standard pattern. The test patterns were related to the standard pattern by a perspective or projective transformation, or they were completely unrelated. Performance was slightly better in a matching task with perspective and unrelated test patterns (92.6%) than in a projective-random matching task (88.8%). In a direct comparison, participants had a small preference (58.5%) for the perspectively related patterns over the projectively related ones. Preferences were based on the values of the transformation parameters (slant and shear). Hence, perspective and projective transformations yielded perceptual differences, but they were not treated in a categorically different manner by the human visual system.     

Situational Determinants of the Acceptability of Telling Lies1

It was tested whether the same factors people take into account when involved in the decision to lie apply to the evaluation of lies presented in scenarios. The scenarios represented 12 different situation categories formed by the crossing of the motive for lying (social. individualistic, egoistic), the relative importance of the situation (important matter, unimportant matter), and the closeness of the relation between the subject and the receiver of the lie (best friend, acquaintance). The acceptability of lying was evaluated from 2 perspectives (self, others) by 180 women of the general public. The results show that as the interest of the person that is lied to becomes greater, lying becomes more acceptable. As the interest of the liar becomes greater, lying becomes less acceptable. The systematically higher estimations of acceptability attributed to others indicate a false-uniqueness effect.     

Logical semantics as an empirical science

Exact philosophy consists of various disciplines scattered and separated. Formal semantics and philosophy of science are good examples of two such disciplines. The aim of this paper is to show that there is possible to find some integrating bridge topics between the two fields, and to show how insights from the one are illuminating and suggestive in the other.     

Disentangling Discrimination: Victim Characteristics as Determinants of the Perception of Behavior as Racist or Sexist

The present experiment examined the impact of victim characteristics on the judgment of behavior as being sexist or racist. Freshmen from the University of Amsterdam read eight scenarios describing instances of everyday discrimination. The race, gender, and socioeconomic status (SES) of the victims in the scenarios were varied systematically. Each scenario was followed by three consecutive questionnaires designed to assess the degree to which research participants perceived the behavior of the agent as racist, sexist, or otherwise. The asymmetry hypothesis for blacks of high and low SES was confirmed Blacks of low SES were more often considered to be victims of racism than blacks of high SES. However, contrary to the asymmetry hypothesis, we found that women of high rather than low SES were more likely to be considered victims of sexism. This finding is inconsistent with other results, and demonstrates that it is not always the less empowered group that is judged as being the most discriminated against. Further, this study demonstrates the relevancy of victim's SES in discrimination research. Finally, the importance of disentangling sexist and racist elements of discrimination is stressed, especially in research involving black women.