Psychophysics in the field: Perception and memory for labor pain

Separate groups of women estimated the painfulness of labor contractions either immediately (perceptual judgments) or at time intervals varying from 8 to 48 h after their completion (memorial judgments). The pain judgments of individual uterine contractions were related functionally to the biometrically measured magnitude of these contractions. Perceived and remembered painful sensations were related to referent intensities by power functions governed, as a rule, by exponents greater than unity. Exponents for the memory functions were consistently greater than those for the perceptual functions. Psychophysics done in the field can help decide theoretical issues in addition to providing useful practical information.     

Construction of monadic three-valued Łukasiewicz algebras

The notion of monadic three-valued ukasiewicz algebras was introduced by L. Monteiro ([12], [14]) as a generalization of monadic Boolean algebras. A. Monteiro ([9], [10]) and later L. Monteiro and L. Gonzalez Coppola [17] obtained a method for the construction of a three-valued ukasiewicz algebra from a monadic Boolea algebra. In this note we give the construction of a monadic three-valued ukasiewicz algebra from a Boolean algebra B where we have defined two quantification operations and ^* such that ^*x=^*x (where ^*x=-^*-x). In this case we shall say that and ^* commutes. If B is finite and is an existential quantifier over B, we shall show how to obtain all the existential quantifiers ^* which commute with .Taking into account R. Mayet [3] we also construct a monadic three-valued ukasiewicz algebra from a monadic Boolean algebra B and a monadic ideal I of B. The most essential results of the present paper will be submitted to the XXXIX Annual Meeting of the Unión Matemática Argentina (October 1989, Rosario, Argentina).     

Evaluating the filial behaviour scale across three cultural groups using exploratory structural equation modelling

Filial piety is a Confucian concept that guides how children treat and take care of their parents. The Filial Behaviour Scale (FBS) is a 25-item instrument developed in the Chinese context measuring behavioural manifestations of filial piety. Although the components of filial piety have been found to be relevant across cultures, little research has investigated the psychometric properties of the FBS in other cultural contexts. The present study evaluated the factor structure, internal consistency, measurement invariance and construct validity of the FBS across three cultural groups: the United States, Italy and Malaysia. Participants were 1090 emerging adults (67% females; M_age = 21.29 years, SD = 1.97; White Americans: n = 455, White Italians: n = 428, Malays: n = 328). A two-factor structure emerged across groups: Obedience/Obligation (behaviours showing obedience and obligation towards parents) and Relationship (behaviours expressing affection and promoting positive parent–child relationships). The two factors demonstrated adequate internal consistency, full configural, partial metric and partial scalar invariance, as well as unique associations with depressive symptoms and parent–child relationships across groups. These findings yielded a more nuanced understanding of filial behaviour and supported the utility of a two-factor FBS among emerging adults in various cultural contexts.     

Metacognitive Interpersonal Therapy Improves Adherence to Antiretroviral Therapies in a Man with a Severe Personality Disorder: A Case Report

Treatment adherence by patients with HIV ensures they gain the full benefit of antiretroviral medications and extend their lives. One problem which may contribute to poor adherence is deficits in metacognition or the capacity to make sense of mental states. In particular, persons who struggle to notice and think about their thoughts and feelings may be less able to direct their own recovery by taking advantage of effective treatments. This raises the possibility that treatments which lead to improved metacognitive function may enhance treatment adherence. We describe the case of a man in an advanced stage of AIDS with Kaposi’s sarcoma. The patient was treated with Metacognitive Interpersonal Therapy combined with psychoeducation about pharmacological treatment for HIV. Primary medical outcomes were suppression of viral load, increase of CD4 count and control of AIDS related conditions such as Kaposi’s sarcoma. The primary psychological outcome was reduction of personality disorders criteria. The patient was able to understand what led him to discontinue medication and then later regain full adherence. He achieved suppression of viral load and restore of CD4 count. As regard severity of personality disorder, he achieved reliable change. Interventions such as Metacognitive Interpersonal Therapy may assist patients with HIV to gain the metacognitive capacities to make sense of their medical and psychological challenges and adhere to antiretroviral therapies leading to enhanced levels of health. Future studies are needed to explore these findings in larger controlled studies.     

The Associations between Perceived Maternal Psychological Control and Academic Performance and Academic Self-Concept in Chinese Adolescents: The Mediating Role of Basic Psychological Needs

This study examined the associations between perceived maternal psychological control and adolescent academic functioning in terms of academic performance and academic self-concept. The study also tested the possible mediating role of basic psychological needs to investigate how parental psychological control is related to child academic functioning. A sample of Chinese adolescents (N?=?338) completed a self-administered questionnaire on maternal psychological control, academic self-concept, academic performance and basic psychological needs satisfaction. Structural equation modeling was used for data analyses. Findings of this study revealed that Chinese adolescents’ perceptions of maternal psychological control were associated with their academic self-concept, and furthermore this association was mediated by adolescents’ basic psychological needs satisfaction on autonomy, relatedness and competence. Theoretical and practical implications, as well as future research directions were discussed.     

Happiness and health behaviours among university students from 24 low,middle and high income countries

The aim of this study was to examine health behaviours and happiness and associated factors in low, middle and high income countries. In a cross-sectional survey, 17 508 undergraduate university students (mean age 20.9, SD = 2. 8) from 25 universities in 24 countries across Asia, Africa and the Americas self-completed anonymous questionnaires. Results indicate that the overall happiness mean score among university students across 24 countries was 13.7 (range 4–20). Generally, the study found that university students from countries of the Caribbean, South America and sub-Saharan Africa had greater happiness scores than students from countries in North Africa and Asia. In multivariate linear regression analysis, better subjective socio-economic status, coming from an higher income country, higher social support, higher intrinsic religiosity, higher personal mastery, positive health behaviours (regular breakfast, adequate physical activity, habitual seatbelt use, regular dental check-ups, not having had an injury, not drinking and driving) and negative health behaviours (not having three or more servings of vegetables and eating red meat daily) were correlated with happiness. Improvement to the happiness of university students should consider regional differences in socio-economic environment.     

Beyond the double-jeopardy hypothesis: Assessing emotion on the faces of multiply-categorizable targets of prejudice

Prior research has shown that race influences perceptions of facial expressions, with hostility detected earlier on young male Black than White faces. This study examined whether the interplay of race and age would moderate perceptions of hostility by having participants evaluate facial expressions of multiply-categorizable targets. Using a facial emotion change-detection task, we assessed evaluations of onset/offset of anger and happiness on faces of young and old Black and White men. Significant age by race interactions were observed: while participants perceived anger as lasting longer and appearing sooner on old compared to young White faces, this relationship was reversed for Black faces, with participants perceiving anger lasting longer and appearing sooner on young compared to old Black faces. Similar results were found for perceived happiness. These results suggest that perception during cross-categorization may be more complex than the simple additive function proposed by the double-jeopardy hypothesis, such that co-activation of other stereotypes may sometimes confer a protective benefit against bias.     

The GABAergic effect of low doses of lorazepam on social behavior

The aim of this work was to test the antiaggressive effects of lorazepam and to determine whether these effects were mediated by benzodiazepine receptors. In a first experiment, male mice were injected with lorazepam in a range of low doses (0.05, 0.1, 0.2, and 0.6 mg/kg) or saline solution. In a second experiment, 1 mg/kg of Ro 15‐1788, a benzodiazepine receptor antagonist, and a saline solution were injected before the behavioral test. Results showed that 0.6 mg/kg of lorazepam was the only dose that decreased the total duration of threat (P < .01) and social investigation (P < .05) and that 1 mg/kg of Ro 15‐1788 had no effects. In the third experiment, animals received two injections: 0.6 mg/kg of lorazepam plus 1 mg/kg of Ro 15‐1788, 0.6 mg/kg of lorazepam plus saline solution, or saline solution plus saline solution. Those treated with lorazepam and saline solution spent less time digging (P < .001), threatening (P < .001), and attacking (P < .05) and more time avoiding the opponent (P < .01) or being immobile (P < .001) than the controls. Ro 15‐1788 was successful in completely antagonizing the behavior modulated by lorazepam. Aggr. Behav. 28:248–256, 2002. © 2002 Wiley‐Liss, Inc.