Treatment of Diogenes Syndrome with Risperidone

Diogenes syndrome is characterized by shameless neglect of the body and personal environment, hoarding, and the rejection of any help. It occurs among patients with and without other psychiatric disorders. The initial treatment should be a behavioral program, but there is no information about the pharmacological treatment of this syndrome. We report the case of a 77-year-old woman with symptoms of Diogenes syndrome. After an unsuccessful behavioral program, treatment with risperidone initially improved the behavioral symptoms but impaired cognitive function, and was followed by marked global deterioration, fulfilling criteria for dementia.     

Exploring Perceptions of Xenophobia in a Sample of South African Employees

This brief report aimed to explore the perceptions of xenophobia within a sample of South African employees. Data on participants' views regarding xenophobia, related xenophobic violence and causes were collected from 127 respondents (males=43%, females=57%, with the majority of respondents being Afrikaans speaking=53% and white=68.5%). Responses were thematically analysed. Seventy-four percent of respondents did not approve of xenophobic behaviour. Only twenty percent of the respondents empathised with South Africans with xenophobia. Six percent of the respondents were indifferent to xenophobia. Participants considered having xenophobia to be related to unemployment, poverty, poor governance, a lack of education and involvement in crime.     

Antecedents of risk-taking behaviour among South African adolescents

This study aimed to investigate contextual predisposition to risk-taking behaviour among South African adolescents. Participants included 194 black adolescents from central South Africa (female = 50.5% between the ages of 16 and 19 years). The adolescents completed a youth risk behaviour survey as well as a questionnaire on their parental, peer, school, and community relationships. Data were analysed by means of multivariate analyses of variance and standard multiple regression analyses in order to predict risk-taking behaviour (violence, substance use, and risky sexual behaviour) from various relationship contexts (parents, peers, school, and community). Irrespective of relationship context, males portray a higher risk for all types of risky behaviour, and the more time adolescents spend with their peers, the higher their risk for engagement in risk-taking behaviour. Parental monitoring predicted a lower risk for portraying risky behaviour.     

Psychological Strengths as Predictors of Postgraduate Students' Academic Achievement

This study sought to predict students' Grade Point Average (GPA) from their personal sense of coherence, locus of control, hope and research self-efficacy. Participants were 429 postgraduate students at a large South African university (males = 86, females = 311, age range = 20 to 53, mean age = 30, SD = 6.77). They completed measures of sense of coherence, locus of control, hope orientation and research self-efficacy. Data were analysed using logistic regression. Results revealed that only research self-efficacy significantly predicted academic achievement. Although of small practical significance, it seems that students' beliefs about their own potential and abilities regarding research could influence their success to some degree. It is recommended that research self-efficacy, together with other psychological strengths, be further investigated as a predictor of academic success.     

BOOK REVIEWS

This paper deals with the traumatic departures of Jews from Morocco during the 1950s and 1960s. The issue is analyzed through a set of diverse oral narrations. The study is based on several interviews conducted both among Jews who left Morocco and Muslims still living in the city of Meknes. The repression of the memory by Muslims of two young Jews murdered in 1967 in Meknes is questioned. In fact, although the perceptions concerning the Jews' departure differs according to the interviewee's social class, a common feeling appears to be shared by different societal sectors regarding this specific issue, which still comes across as a sensitive one today. The representation of Jews traditionally depicted as “fearful” and “weak” turns into “courageous” and “strong” during the Six‐Day War. This new representation perturbed the Muslim population, which seemed to be unable to deal with the new status Jews were acquiring. In fact, emigration was commonly considered to betray a lack of virility. The paper argues that the unexpected departure of an historic component of Moroccan society has left an open wound in Morocco. Even the memory of the “events” by the Jewish population appears to be fragmented into ambiguous constructions, leading, on the one hand, to perceptions of fear and uncertainty and, on the other, to images of affectionate relationships and intense nostalgia.     

Priming effects on the N400 in the affective priming paradigm with facial expressions of emotion

We studied the effect of facial expression primes on the evaluation of target words through a variant of the affective priming paradigm. In order to make the affective valence of the faces irrelevant to the task, the participants were assigned a double prime–target task in which they were unpredictably asked either to identify the gender of the face or to evaluate whether the word was pleasant or unpleasant. Behavioral and electrophysiological (event-related potential, or ERP) indices of affective priming were analyzed. Temporal and spatial versions of principal components analyses were used to detect and quantify those ERP components associated with affective priming. Although no significant behavioral priming was observed, electrophysiological indices showed a reverse priming effect, in the sense that the amplitude of the N400 was higher in response to congruent than to incongruent negative words. Moreover, a late positive potential (LPP), peaking around 700 ms, was sensitive to affective valence but not to prime–target congruency. This pattern of results is consistent with previous accounts of ERP effects in the affective priming paradigm that have linked the LPP with evaluative priming and the N400 with semantic priming. Our proposed explanation of the N400 priming effects obtained in the present study is based on two assumptions: a double check of affective stimuli in terms of valence and specific emotion content, and the differential specificities of facial expressions of positive and negative emotions.     

Interactive effects of personality and separation as acculturation style on adolescent antisocial behaviour

The primary aim of this study was to assess the interaction between personality and acculturation variables in predicting antisocial behaviour among adolescent immigrants living in Spain. Previous studies have shown that the acculturation style referred to as separation (rejection of the host country's culture, and a strong desire to preserve the culture of the country of origin) was strongly related to antisocial behaviour among immigrants. A further aim of this study was to examine if the relationship between separation and antisocial behaviour was moderated by personality variables, in particular impulsivity, sensation-seeking, and personal competence. Self-reported data of a sample of 750 adolescent immigrants living in Galicia's and Madrid's regions (Spain) were gathered using previously validated scales. The results revealed that both separation and personality variables were significantly related to antisocial behaviour. Moreover, hierarchical regression analysis with the interaction terms entered found significant moderating effects i.e., the relationship between separation and antisocial behaviour was significantly amplified when impulsivity or sensation-seeking were high. The results underscore the need to examine the effects of personality, acculturation, and the interaction between both on antisocial behaviour among adolescent immigrants.     

The source of dual-task limitations: Serial or parallel processing of multiple response selections?

Although it is generally recognized that the concurrent performance of two tasks incurs costs, the sources of these dual-task costs remain controversial. The serial bottleneck model suggests that serial postponement of task performance in dual-task conditions results from a central stage of response selection that can only process one task at a time. Cognitive-control models, by contrast, propose that multiple response selections can proceed in parallel, but that serial processing of task performance is predominantly adopted because its processing efficiency is higher than that of parallel processing. In the present study, we empirically tested this proposition by examining whether parallel processing would occur when it was more efficient and financially rewarded. The results indicated that even when parallel processing was more efficient and was incentivized by financial reward, participants still failed to process tasks in parallel. We conclude that central information processing is limited by a serial bottleneck.     

Is case-based reasoning a source of knowledge generalisation?

This study examines the link between case-based reasoning and knowledge generalisation. Experiment 1 showed that case-based reasoning is not in itself a source of generalisation. In this experiment, subjects were able to adapt knowledge acquired during analysis of an example in order to successfully solve a very similar problem. But immediately afterwards, they failed on a problem symmetrical to the one they had just solved. Experiments 2A and 2B showed, in this same situation, that it is possible to lead subjects to generalise simply by stating that the practice problems were similar to the examples. These findings suggest that knowledge generalisation accompanying case-based reasoning is the result of a process that must be actively implemented by the subject, and not an automatic outcome of the source-to-target transfer.