Parameter identification in multinomial processing tree models

Multinomial processing tree models form a popular class of statistical models for categorical data that have applications in various areas of psychological research. As in all statistical models, establishing which parameters are identified is necessary for model inference and selection on the basis of the likelihood function, and for the interpretation of the results. The required calculations to establish global identification can become intractable in complex models. We show how to establish local identification in multinomial processing tree models, based on formal methods independently proposed by Catchpole and Morgan (1997) and by Bekker, Merckens, and Wansbeek (1994). This approach is illustrated with multinomial processing tree models for the source-monitoring paradigm in memory research.     

RIASEC interest and confidence cutoff scores: Implications for career counseling

One strategy commonly used to simplify the joint interpretation of interest and confidence inventories is the use of cutoff scores to classify individuals dichotomously as having high or low levels of confidence and interest, respectively. The present study examined the adequacy of cutoff scores currently recommended for the joint interpretation of the Strong Interest Inventory (SII: Donnay, Morris, Schaubhut, & Thompson, 2005) and the Skills Confidence Inventory (SCI: [Betz, Borgen et al., 1996] and [Betz et al., 2005]). Cutoff score criteria were evaluated based on a sample of college students and employed adults (n = 1000), and cross-validated with a second sample of college students (n = 1, 149) who completed an experimental measure of RIASEC interests and confidence. Results were interpreted in the context of social cognitive career theory (Lent, Brown, & Hackett, 1994) by testing predictions regarding the relative frequency of individuals with either matched or mismatched levels of interest and confidence.     

Paying attention to each other. An essay on the transnational intersections of industrial economy,subjectivity, and governance in East Germany's social-psychological training

This article examines a little-known chapter both in the history of socialist labor relations and the history of psychology: Social Psychological Training (SPT) for industrial leaders in the German Democratic Republic (GDR). Based on previously untapped archival sources, it uncovers the transnational genesis of SPT and its intricate relationships with Western “therapeutic culture” of the 1970s. Governmental perspectives are addressed, as well as the level of individual appropriation of SPT and possible unintended side effects of techniques that were drawn from the social psychological and therapeutical fields. This case study helps to explore the functions of psychological expertise in authoritarian political contexts, as well as the polyvalence of group methods of change, the effects of which could turn out repressive as well as liberating on both sides of the Iron Curtain. The history of SPT solicits a polycentric view on therapeutic culture, capturing its diverse manifestations and interconnections between different societies and political economies.     

From Gaming to Hating: Extreme-Right Ideological Indoctrination and Mobilization for Violence of Children on Online Gaming Platforms

As a consequence of numerous extreme-right terror attacks in which the perpetrators posted their manifestos and attack life streams on online platforms adjacent to the video gaming community, as well as radicalized within that environment to a significant degree (e.g., Christchurch, New Zealand; Halle, Germany), increasing scholarly and policymaker interest is focusing on far-right radicalization and recruitment within online video game environments. Yet little empirical insights exist about the specific engagement between right-wing extremists and their potential recruits on these platforms. This study presents findings from a qualitative exploration of German police-investigation files for two children who radicalized on gaming platforms to become involved in extreme-right criminal behavior, including the plotting of a terrorist attack. The study demonstrates the importance of online and offline factor interaction, especially regarding the role of familiar criminogenic factors, as well as the social–emotional bonding between potential recruits and extremist gamers created through shared gaming experiences that lead to high-intensity extremist radicalization aimed at offline behavioral changes. The study did not find evidence for strategic organizational far-right recruitment campaigns, but rather multidirectional social-networking processes which were also initiated by the potential recruits.     

Binocular depth perception in the pigeon.

By means of a discrete-trial simultaneous discrimination procedure, pigeons were trained to respond differentially to visual arrays that were identical except that one of them contained a circle displaced in depth when viewed stereoscopically. Performance was severely disrupted when one eye was occluded. The monocular deficit was peculiar to the depth task, inasmuch as no such decrement was seen on a pattern discrimination. The results imply that presence of the displaced circle was discriminated on the basis of a binocular cue. It was also found that pigeons could discriminate the direction of the displacement. Discrimination of depth was independent of the global form and still occurred when elements of the array were randomly displaced in depth. Performance was not disrupted when the absolute convergence angle of the depth stimulus was changed. The cue that consistently accounted for the behavior seen was the detection of the relative angles of convergence--that is, the retinal disparity of the two planes in depth. Thus, despite the lateral position of the eyes of the pigeon, a small binocular field mediates the binocular discrimination of near objects in depth.     

The implications of maternal grandmother coresidence and involvement for adolescent adjustment in South Africa

Maternal grandmothers residing in 3‐generation households often provide care and support to their grandchildren. However, the implications of grandmother coresidence and involvement for adolescent adjustment have been neglected in the South African literature. This study examined whether the involvement of maternal grandmothers who coreside with grandchildren and their parents differed from that of non‐coresident grandmothers. In addition, we assessed the associations between maternal grandmother coresidence and involvement, and adolescents' internalising problems, externalising problems and prosocial behaviour. Self‐report survey data were obtained from a sample of 384 “coloured” (mixed‐race) and black African Grade 8 and Grade 9 students in Cape Town. The mean age of the participants was 13.96 years, 58% were females and 27% lived in 3‐generation households. Results indicated that there was no significant difference in the involvement of coresident and non‐coresident grandmothers, and that adolescents in 3‐generation and 2‐generation households displayed similar levels of adjustment. Hierarchical multiple regression analyses revealed that greater maternal grandmother involvement was associated with more adolescent prosocial behaviour (p < .001) regardless of household structure, and with fewer adolescent internalising problems in 3‐generation households (p = .03). Findings underscore the need to move beyond the immediate family to consider how grandparents may influence adolescent development.     

Beziehung und Exposition

In the treatment of anxiety disorders both psychodynamic and behavioral therapeutic methods have proved successful. Linking the two methods in one treatment is usually avoided by therapists, although there is evidence for using such an approach. There is a lack of a regulatory framework for the integration of the various procedures. Taking anxiety treatment as an example, a contribution to such a regulatory framework is developed: the use of exposure (as a cognitive behavioral element) and the examination of the transference aspect of the therapeutic relationship by the therapist (as a psychodynamic element) are systematically placed in relation to each other, whereby the understanding of the therapeutic process is deepened.     

Do alerting signals increase the size of the attentional focus?

Previous research has shown that the presentation of an auditory alerting signal before a visual target increases the interference from flanking distractors. Recently, it has been suggested that this increase in interference may be due to an expansion of the spatial focus of attention. In five experiments, this hypothesis was tested by using a probe technique dedicated to measuring variations in the size of the attentional focus: In the majority of trials, participants performed a letter discrimination task in which their attention was focused on a central target letter. In a randomly intermixed probe task, the size of the attentional focus was measured by letting participants respond to a probe occurring at varying positions. In all experiments, reaction time (RT) to the probe increased from the most central to more lateral probe positions. This V-shaped probe-RT function, however, was not flattened by the presentation of an alerting signal. Overall, this pattern of results is inconsistent with the hypothesis that alerting signals increase the attentional focus. Instead, it is consistent with nonspatial accounts that attribute the increase in interference to an alerting effect on perceptual processing, which then leads to a detrimental effect at the level of response selection.     

Being a Foreigner in Philosophy: A Taxonomy

The question of diversity, both with regard to the demographic profile of philosophers as well as the content of philosophical inquiry, has received much attention in recent years. One figure that has gone relatively unnoticed is that of the foreigner. To the extent that philosophers have taken the foreigner as their object of inquiry, they have focused largely on challenges nonnative speakers of English face in a profession conducted predominantly in English. Yet an understanding of the foreigner in terms of the nonnative speaker does not exhaust the conceptual space of the foreigner. This article provides a more nuanced conceptual apparatus that allows for a more precise identification and discussion of other ways in which one can be a foreigner in philosophy. I develop a taxonomy of different conceptions of the foreigner, namely the linguistic, material, cultural, and epistemic foreigner; I discuss the different and specific challenges they face; and I show how foreigners enrich philosophical practice.