Safer Sex in Social Context: Individualistic and Relational Determinants of AIDS‐Preventive Behavior Among Gay Men1

This longitudinal study of gay men examined safer sex within steady relationships and assessed whether relationship quality influenced safer sex with casual partners. The theoretical frameworks of Rusbult's (1980) investment model of romantic relationships and of Ajzen's (1988, 1991) model of planned behavior were used. Unprotected intercourse with a steady partner was practiced significantly more often when both partners in a steady relationship were seronegative and had an explicit agreement to keep it safe with casual partners. However, there was no indication that explicit agreements reduced the occurrence of unsafe extrarelational sex. Both the investment model of romantic relationships and the model of planned behavior were successful in accounting for sexual risk behavior outside the relationship.     

Personality Maturation during the Transition to Working Life: Associations with Commitment as a Possible Indicator of Social Investment

The social investment theory (SIT) proposes that personality maturation is triggered by transitions into age‐graded roles and psychological commitment to these roles. The present study examines the predictions of SIT by focusing on the transition from student life to working life. We analysed three‐wave longitudinal data and compared participants who made the transition into working life (N = 226), participants who combined education with work (N = 387), and participants who did not make the transition at all (N = 287). In contrast to the predictions of SIT, we found no differences in personality maturation between individuals who made the transition into working life and those who did this only partly or not at all. Psychological commitment to work did not explain individual differences in personality maturation for those who made the transition (partly) into working life after controlling for multiple testing. Therefore, the present study did not support the predictions of SIT. © 2019 The Authors European Journal of Personality published by John Wiley & Sons Ltd on behalf of European Association of Personality Psychology     

The formation of reference systems in visual motion perception

Summary In visual perception complex movements are usually split up into components — e.g., in such a way that a moving reference system is applied, to which partial movements can be related. In the following experiment a perceptual vector analysis of this kind was investigated. It was shown that 1) a radial translatory movement (relative component) can be isolated perceptually from a rotatory movement (global component) and that 2) the precision of this decomposition of the complex movement is dependent on the strength at which the rotating reference system is anchored perceptually.The authors wish to thank M. Rauterberg for collecting the experimental data     

Impaired appetitively as well as aversively motivated behaviors and learning in PDE10A-deficient mice suggest a role for striatal signaling in evaluative salience attribution

Phosphodiesterase 10A (PDE10A) hydrolyzes both cAMP and cGMP, and is a key element in the regulation of medium spiny neuron (MSN) activity in the striatum. In the present report, we investigated the effects of targeted disruption of PDE10A on spatial learning and memory as well as aversive and appetitive conditioning in C57BL/6 J mice. Because of its putative role in motivational processes and reward learning, we also determined the expression of the immediate early gene zif268 in striatum and anterior cingulate cortex. Animals showed decreased response rates in scheduled appetitive operant conditioning, as well as impaired aversive conditioning in a passive avoidance task. Morris water maze performance revealed not-motor related spatial learning and memory deficits. Anxiety and social explorative behavior was not affected in PDE10A-deficient mice. Expression of zif268 was increased in striatum and anterior cingulate cortex, which suggests alterations in the neural connections between striatum and anterior cingulate cortex in PDE10A-deficient mice. The changes in behavior and plasticity in these PDE10A-deficient mice were in accordance with the proposed role of striatal MSNs and corticostriatal connections in evaluative salience attribution.     

Boundaries to the articulation of possible selves through social networking sites: the case of Facebook profilers' social connectedness

This study aims to contribute to an emerging literature that seeks to understand how identity markers on social networking sites (SNSs) shape interpersonal impressions, and particularly the boundaries that SNSs present for articulating unconstrained "hoped-for possible selves." An experiment employing mock-up Facebook profiles was conducted, showing that appearing with friends on a Facebook profile picture as well as increasingly higher number of Facebook friends strengthened perceptions of a profiler's hoped-for level of social connectedness. Excessive numbers of friends, however, weakened perceptions of a profiler's real-level social connectedness, particularly among participants with smaller social networks on Facebook themselves. The discussion focuses on when people come to find that reasonable boundaries of self-generated information on an SNS have been exceeded.     

A developmental typology of adolescent personality

The purpose of the current study is to examine whether Block's personality types (i.e. Resilients, Undercontrollers and Overcontrollers) are replicable as developmental trajectories. We applied a Latent Class Growth Analysis (LCGA) framework to five‐ annual‐wave data on a sample of early to middle adolescents (n = 923). Our results showed that Block's Resilients, Undercontrollers and Overcontrollers are indeed replicable as developmental trajectories across adolescence. These developmental types were related to problem behaviour in a similar way as types found in studies using cross‐sectional data. As such, Resilients reflected low levels of problem behaviour, Undercontrollers had high levels of delinquency and Overcontrollers had high levels of depression. Implications and suggestions for further research are discussed. Copyright © 2009 John Wiley & Sons, Ltd.     

Family interventions in schizophrenia: evidence for efficacy and proposed mechanisms of change

Family intervention for psychosis developed from empirical work on the role of emotion in families of those caring for someone with schizophrenia. The level of expressed emotion (EE) has been shown to be a robust predictor of subsequent outcome for service users returning to live in family settings. There is also evidence that staff have similar attitudes. This has led to the development of specific family interventions for schizophrenia. NICE Guidelines for Schizophrenia (2003) confirm that family intervention is effective at reducing service user relapse rates and recommends it for those in contact with carers. Exactly how family intervention improves outcome is less clear. A recent model of psychosis proposes a primarily emotional rather than cognitive route for family factors, and some evidence is presented which supports this. Implications for family interventions are discussed.