On the determinants of surface brightness

The brightness of an achromatic surface with luminance S on an achromatic background with luminance B varies with S, with B, and with the luminance step deltaL at the border of the surface. In agreement with previous findings indicating that the visual system can perform as a photometer, the results of the two experiments reported here show that S and B determined surface brightness independently of deltaL when the surface was adjacent to and when it was separated from the background. This finding suggests that surface brightness depends on the integration of neural signals representing magnitudes of absolute luminance. A weighted-average model of this integration is proposed.     

Psychological Correlates of Populist Attitudes

Studies of demand-side populism with a focus on attitudinal and behavioral factors are becoming more popular, but only a few have explored the phenomenon's psychological determinants. We tackle the lack of conversation between populism scholars and political psychologists and test the impact of conspiracy beliefs, moral disengagement, need for cognition, and belief in simple solutions on populist attitudes. We use the most widespread ideational definition in an attempt to bring clarity to demand-side populism, as the literature often conflates the concept of populism with adjacent ideological and psychological factors. We analyze representative samples from two very different countries (Italy and Turkey) to test our hypotheses. We use two of the most often-used measures of populist attitudes and also explore populism's individual building blocks: people-centrism, antielitism, and a Manichean worldview. We consistently find conspiracy beliefs (and our control variable of institutional trust) as primary sources of populist attitudes, whereas the impact of the other psychological factors is more dependent on context and operationalization. Our article calls for more conceptual clarity, careful theorization, and more work on the refinement of available survey measures. We also highlight the importance of national contexts and the dangers of generalization based on individual country studies.     

Exploring the Link Between Mind Wandering,Mindfulness, and Creativity: A Multidimensional Approach

Even if mind wandering (MW) and mindfulness have traditionally been intended as separate and antithetical constructs, the roles of these 2 mental states on creative behavior were jointly explored in this article. In particular, MW was analyzed in light of a recent approach suggesting a differentiation between deliberate and spontaneous MW, whereas mindfulness was analyzed by distinguishing its 5 different constitutional dimensions: observing, acting with awareness, describing, nonreactivity, and nonjudging. The influence on creativity of these 2 mental states was analyzed using a sample of 77 undergraduate students both on a performance index (i.e., originality) and on a self-report index (i.e., creative achievement). Results showed that MW and mindfulness dimensions predicted creative behavior both alone and in combination, suggesting a complex interdependence between these 2 mental states within the creative thinking process. In particular, the critical importance of distinguishing between deliberate and spontaneous MW was revealed by a final path analysis, which revealed the opposite effects of these 2 dimensions on originality and creative achievement. That is, deliberate MW positively predicted creative performance, whereas spontaneous MW was negatively associated with such performance. Moreover, the nonreactivity and awareness dimensions of mindfulness, the latter in interaction with deliberate MW, emerged as main predictors of response originality. Finally, the describing facet of mindfulness predicted creative achievement both directly and indirectly through an interaction with deliberate MW. The implications emerging from the adoption of a multi-dimensional approach to the analysis of MW and mindfulness in the study of creativity are discussed herein.     

Preventing and Treating Women’s Postpartum Depression: A Qualitative Systematic Review on Partner-Inclusive Interventions

Partner-related factors associated with the occurrence of Postpartum Depression (PPD) may justify the partner’s inclusion in preventive and treatment approaches. The aim of this qualitative systematic review was to synthesize the literature on partner-inclusive interventions designed to prevent or treat postpartum depression (PPD) in women. In accordance with the PRISMA guidelines, the systematic search of studies published between 1967 and May 2015 in PsycINFO and PubMed identified 26 studies that met the inclusion criteria, which reported on 24 interventions. The following partner parameters were analyzed: participation type, session content, mental health assessment, attendance assessment, and the effects of partner’s participation on the women’s response to the interventions. Total participation by the partner was mostly reported in the prevention studies, whereas partial participation was reported in the treatment studies. The session content was mostly based on psychoeducation about PPD and parenthood, coping strategies to facilitate the transition to parenthood such as the partner’s emotional and instrumental support, and problem-solving and communication skills. Some benefits perceived by the couples underscore the relevance of the partner’s inclusion in PPD interventions. However, the scarce information about the partner’s attendance and the associated effects on the women’s intervention outcomes, along with methodological limitations of the studies, made it difficult to determine if the partner’s participation was associated with the intervention’s efficacy. Conclusions about the clinical value of including partners in PPD interventions are still limited. More research is warranted to better inform health policy strategies.     

The Impact of Stigma and Social Support on Development of Post-traumatic Growth Among Persons Living with HIV

Given high rates of trauma in people living with HIV (PLH) and the health benefits of posttraumatic growth (PTG), understanding how to foster PTG in PLH exposed to trauma could be of interest to clinical psychologists working with this population. The current study examined factors theoretically related to development of PTG in PLH, namely HIV-related stigma, disclosure of HIV status, and emotional support. A sample of 334 HIV-positive adults answered a battery of self-report questionnaires. HIV-related stigma, disclosure to sexual partners, and emotional support were significant predictors of PTG: stigma was associated with lower PTG, whereas disclosure and emotional support were associated with higher PTG. Disclosure and emotional support remained significantly associated with PTG in the model including demographic factors and stigma. These findings highlight the need for development of interventions that can aid PLH in disclosing their HIV status to sexual partners and increasing available social support.     

Inherent directionality of “even if” counterfactual conditionals

In this research, we investigate whether semifactual conditionals such as “even if there had been an A, there would have been a B” are understood by thinking initially of the antecedent “A”, as was found with factual conditionals. The “inherent directionality” hypothesis assumes that for the comprehension of most relational statements, a presuppositional element (i.e. the “relatum”) is initially established. For “even if”, both terms could work as “relatum”. This is because on the one hand, people tend to infer “B” from “A” and “not-A” and, on the other hand, “B” could work as a pragmatic presupposition. In the present experiment, semifactual and factual conditionals were tested with a sentence-picture verification task. Results were consistent with the “inherent directionality” hypothesis: only “if then” factual conditionals, but not semifactuals, showed a preference for reasoning from the antecedent, with faster verifications.     

Individual and social risk factors related to overt victimization in a sample of Spanish adolescents

This study analyzes the role of adolescents' self-esteem, loneliness, sociometric status, and perceptions of family and classroom environment on overt vicitimization by peers in a sample of 1319 Spanish adolescents (48% boys and 52% girls), ages 11 to 16 years (M=13.7, SD=1.5). The findings from structural equation modeling suggest that adolescents' self-esteem, loneliness, and sociometric status had a significant direct effect on overt victimization by peers, and adolescents' perceptions of family and classroom environment had a significant indirect effect on peer overt victimization mediated by self-esteem, loneliness, and sociometric status. The findings are discussed with the consideration of these variables as individual and social risk factors for overt victimization by peers.     

Behavioural evidence for separating components within visuo-spatial working memory

Several different sources of evidence support the idea that visuo-spatial working memory can be segregated into separate cognitive subsystems. However, the nature of these systems remains unclear. Recently we reported data from neurological patients suggesting that information about visual appearance is retained in a different subsystem from information about spatial location. In this paper we report latency data from neurologically intact participants showing an experimental double dissociation between memory for appearance and memory for location. This was achieved by use of a selective dual task interference technique. This pattern provides evidence supporting the segregation of visuo-spatial memory between two systems, one of which supports memory for stimulus appearance and the other which supports memory for spatial location.     

Investigating mental representation of order with a speeded probed recall task

We compare three models of representation of item order in a verbal STM task: item-item associations, item-position associations, and primacy gradient. A speeded probed recall task is used, in which a list of words is presented, immediately followed by a probe; participants must report as fast as possible the word that was in the probed position. In the number probe condition, a digit is presented and one must say the word in that position. In the word probe condition, the probe is an item of the list and participants must say the immediately following item. Response times (RTs) are analyzed according to probe type and position. The three models imply different predictions about RTs as a function of serial order in the two conditions. Our results suggest a serial, self-terminating search from the beginning of the list to the target position, except for the final position, which is directly accessible. The item-item and item-position association models are ruled out; the primacy gradient model accounts satisfactorily for our results, except for the finding of a larger recency effect with a number probe. Alternative interpretations are also discussed.     

Mainstream Economics and Sense-Making

This work presents a semiotic approach to the economy, underlining that any economic phenomena is at the same time a communicative act as it is contingent to sense-making.The article discusses this topic by focusing on a specific phenomenon studied by economics: the underground economy. It shows that the conceptualization of the underground economy in terms of sense-making processes offers a thought-provoking perspective for theoretical development. More in general, the discussion proposed makes it clear that in order to deepen our vision of economic phenomena in a more thoughtful and realistic way we need to rethink these phenomena as being reciprocally and circularly embedded in the semiotic flow of life. The economy is within sense-making and it is shaped by it; at the same time sense-making is within the economy, as its semiotic substance.