Positivity effect in healthy aging in observational but not active feedback-learning

ABSTRACT

The present study investigated the impact of healthy aging on the bias to learn from positive or negative performance feedback in observational and active feedback learning. In active learning, a previous study had already shown a negative learning bias in healthy seniors older than 75 years, while no bias was found for younger seniors. However, healthy aging is accompanied by a ‘positivity effect’, a tendency to primarily attend to stimuli with positive valence. Based on recent findings of dissociable neural mechanisms in active and observational feedback learning, the positivity effect was hypothesized to influence older participants' observational feedback learning in particular. In two separate experiments, groups of young (mean age 27) and older participants (mean age 60 years) completed an observational or active learning task designed to differentially assess positive and negative learning. Older but not younger observational learners showed a significant bias to learn better from positive than negative feedback. In accordance with previous findings, no bias was found for active learning. This pattern of results is discussed in terms of differences in the neural underpinnings of active and observational learning from performance feedback.     

Psychological Well-Being and Resilience as Predictors of First-Year Students' Academic Performance

This study investigated aspects of psychological well-being (burnout and engagement) and resilience as predictors of the academic performance of a group of first-year students at a higher education institution. Participants included 789 first-year students at a South African university (females = 43%, majority ethnicity Black African = 58%). They completed measures of burnout, engagement and resilience. Data were analysed using stepwise multiple regression to determine whether burnout, engagement and resilience were statistically significant predictors of first year students' academic performance. The results indicated that burnout (specifically Emotional Exhaustion and Cynicism) and resilience (specifically Religion) were statistically significant predictors of academic performance. Students with lower levels of cynicism, who are emotionally and cognitively more involved in their studies, seem to perform better. Surprisingly, students who reported being emotionally more exhausted performed well in their studies. Those students who seem to have strong spiritual/religious beliefs also fared better with regard to academic performance than those of lower religious faith. Strong spiritual/religious anchors and continuous cognitive and emotional involvement in academic work are valuable resources to students in their academic performance.     

To be or not to be at risk: Spontaneous reactions to risk information

Rheumatoid arthritis (RA) is a chronic disease, which can lead to considerable psychological distress. The present study evaluated anxiety and depression symptoms for this chronic and painful illness within the framework of the conservation of resources (COR) theory. Coping strategies, coping self-efficacy, religiousness and social support are very important personal resources, which have been found to protect individuals from psychological distress. The aim of the present study was to examine the predictive values of socio-demographic and illness-related variables, perceived social support, ways of coping, religiousness, arthritis self-efficacy and resource loss for psychological distress in a sample of 117 RA patients from Turkey, a secular, Islamic, non-western developing country. The results revealed that RA patients experience considerable anxiety and depressive symptoms. The results of the regression analysis showed that gender, helplessness coping and resource loss are significant predictors of anxiety, whereas arthritis self-efficacy and resource loss are significant predictors of depression. Resource loss appeared as an important predictor for both anxiety and depression. This finding was consistent with the COR theory. The clinical implications of these findings are discussed.     

The role of risk perception and efficacy cognitions in the prediction of HIV-related preventive behavior and condom use

Abstract

Based on empirical findings on the central model variables of the Protection Motivation Theory, the influence of perceived susceptibility, perceived severity of the threat of AIDS, communicative and sexual self-efficacy, and outcome expectancy on various aspects of HIV-preventive behavior was examined. The study was based on a sample of 468 heterosexual adults between the ages of 20 and 45 years. The data were obtained by means of questionnaires filled out at various vacation sites that draw mass tourism or in the subjects' home town. The most significant predictor of behavior was found to be self-efficacy expectancy as regards assertiveness and use of HIV-related preventive measures. A high communicative self-efficacy expectancy, on the other hand, is associated with a higher level of risk behavior among certain subgroups and under certain behavioral aspects. This confirms the necessity of acknowledging the different forms of self-efficacy expectancy in sexual interactions. Perceived personal threat is also associated with risk behavior with respect to certain behavioral operationalizations. From this it can be concluded that one's own behavior is used as the basis for appraising one's susceptibility. The results also show that distinctions must be made when analyzing HIV-related risk behavior. In particular, a difference must be made between absolute behavior (degree of the risk behavior) and relative behavior (change - especially reduction - in risk behavior due to the danger of AIDS).     

Dissociation of facial attractiveness and distinctiveness processing in congenital prosopagnosia

According to the influential model of Bruce and Young (1986) socially relevant facial information is processed separately from facial information leading to individual face recognition. In recent years functional imaging has identified a network of distinct occipitotemporal cortex areas for the processing of these two kinds of information. Functionally it is not clear at which processing level the “social” and the “recognition” pathways diverge. The study of subjects with a profound face recognition and learning deficit (congenital prosopagnosia—cPA) promises for a better understanding of this issue. We therefore tested the perception of attractiveness (a cue of prime social importance) and distinctiveness (a facial feature related to recognition) in 14 people with cPA. Although attractiveness ratings were highly consistent with controls, cPA subjects' distinctiveness ratings showed random patterns. This dissociation of normal attractiveness processing and impaired distinctiveness processing in cPA helps to specifies the nature of the impairment in this condition while shedding light on the functional architecture of normal face processing.     

Psychology in the Czech lands: Bohemia,Czechoslovakia, and the Czech Republic

The article provides a comprehensive review of Czech psychology—its history and its current state. It enumerates significant psychologists who were Czech, born in Bohemia or who were instrumental for the development of psychology in the region. The article also enumerates Czech psychological associations along with their main representatives, journals, and academic facilities involved in education and research in psychology. It is pointed out that the origins of psychology as a science are in the Central Europe—the first laboratory of W. Wundt was in Leipzig, Germany; S. Freud was born in Bohemia, in the Moravian city of Příbor and he practiced in Vienna, Austria. The Czech capital Prague will also become the capital of the psychological science in 2020 when it will be hosting the 32nd International Congress of Psychology (ICP 2020).     

Role of L-type Ca2+ channel isoforms in the extinction of conditioned fear

Dihydropyridine (DHP) L-type Ca(2+) channel (LTCC) antagonists, such as nifedipine, have been reported to impair the extinction of conditioned fear without interfering with its acquisition. Identification of the LTCC isoforms mediating this DHP effect is an essential basis to reveal their role as potential drug targets for the treatment of specific anxiety disorders. Ca(V)1.2 and Ca(V)1.3 are the predominant LTCCs in the mammalian brain. However, since no isoform-selective DHP blockers are available, their individual contribution to fear memory extinction is unknown. We used a novel mouse model expressing DHP-insensitive Ca(V)1.2 LTCCs (Ca(V)1.2DHP(-/-) mice) to address this question. In line with previous studies, wild-type (WT) mice treated with systemic nifedipine displayed markedly impaired fear extinction. This DHP effect was completely abolished in Ca(V)1.2DHP(-/-) mice, indicating that it is mediated by Ca(V)1.2, but not by Ca(V)1.3 LTCCs. Supporting this conclusion, Ca(V)1.3-deficient mice (Ca(V)1.3(-/-)) showed extinction identical to the respective WT mice. The inhibition of fear extinction was not observed after intracerebroventricular (i.c.v.) application of different doses of nifedipine, suggesting that this effect is secondary to inhibition of peripheral Ca(V)1.2 channels. The LTCC activator BayK, which lacks neurotoxic effects in Ca(V)1.2DHP(-/-) mice, did not influence the extinction time course. In summary, we demonstrate that LTCC signaling through the Ca(V)1.2 isoform of LTCCs interferes with fear memory extinction, presumably via a peripherally mediated mechanism. Activation of other LTCC isoforms (predominantly Ca(V)1.3) is not sufficient to accelerate extinction of conditioned fear in mice.