Portfolio choice: Evidence from new-borns

This paper analyzes the role of newborn gender in households’ investment decisions. The results indicate that newborn gender is a significant predictor of both the reallocation of financial wealth across different types of financial assets and households’ investment diversification. Parenting a new baby boy is associated with a higher reallocation of wealth towards cash while the share of financial wealth allocated to risky assets decreases. A new baby boy also significantly reduces the magnitude of portfolio diversification. We find no evidence that the relationship between newborn gender and investment allocation is driven by third variables that simultaneously affect gender and financial decisions. The relationship between newborn gender and the financial decisions is particularly relevant to disentangle unconscious gender bias in households' investment decisions

Competition and subsequent risk-taking behaviour: Heterogeneity across gender and outcomes

This paper studies if competition affects subsequent risk-taking behaviour by means of a laboratory experiment that manipulates the degree of competitiveness of the environment under equivalent monetary incentives. We find that competition increases risk aversion, especially for males, but not in a significant manner. When conditioning on the outcome, we find that males become significantly more risk averse after losing the tournament than after randomly earning the same low payoff. In contrast, males do not become more risk-seeking after winning the tournament, while females\u2019 average risk-taking behaviour is unaffected by tournament participation and outcomes. Our findings can be rationalized using the results of the literature on self-serving attribution

WHICH ARE THE EFFECTS OF BODY-OBJECTIFICATION AND INSTAGRAM-RELATED PRACTICES ON MALE BODY ESTEEM? A CROSS-SECTIONAL STUDY

Objective: According to the objectification framework, media pressure toward body models promotes the internalization of beauty ideals that negatively influence individuals’ body image and self-esteem. Historically, women have been the main target of sociocultural pressures. However, research has recently suggested that self-objectification is a male phenomenon as well, which can be inscribed in men’s body experiences. Nevertheless, fewer studies have specifically focused on the male experience and general consequences of body-objectification are yet to be extensively analyzed regarding males’ body image features. The current cross-sectional study explores the consequences of body-objectification on male body esteem, specifically testing the predictive role of exercising/dietary habits, body-objectification features, and SNS-related practices on male body esteem. Method: A total of 238 male participants (mean age = 24.28 years, SD = 4.32) have been involved in an online survey. Three hierarchical analyses were performed to test the influence of objectified body consciousness and social networking-related experiences (i.e. Instagram intensity use, photo manipulation, selfie feedback investment) on young men’s body esteem with specific reference to the weight, appearance, and attribution features of the Body Esteem Scale. Results: Findings highlighted that body shame played an interesting key role, influencing negatively all the body esteem dimensions, thus highlighting that attention needs to be deserved on this feature of OBC regarding males’ experience. On the contrary, appearance control-related dimensions positively influenced body esteem. Overall, findings confirmed that objectification theory can adequately mark a pathway by which media imagery is internalized also by men and may negatively affect their body esteem. Conclusions: Despite some limitations, this study may contribute to enlarging our knowledge on male body image and self-objectification experience and support literature shattering the stereotype that body dissatisfaction is a “female-exclusive” issue. Likewise, beyond some questioning positions, these findings also encourage further exploration of a healthier “control dimension”, including body appearance related activities and beliefs

The contribution of faint AGN to the hard X-ray background

Hard X-ray selection is the most efficient way to discriminate between accretion-powered sources, such as AGN, from sources dominated by starlight. Hard X-rays are also less affected than other bands by obscuration. We have then carried out the BeppoSAX High Energy Large Area Survey (HELLAS) in the largely unexplored 5-10 keV band, finding 180 sources in ~50 deg^2 of sky with flux >5E-14 erg cm-2 s-1. After correction for the non uniform sky coverage this corresponds to resolving about 30 % of the hard Cosmic X-ray Background (XRB). Here we report on a first optical spectroscopic identification campaign, finding 12 AGN out of 14 X-ray error-boxes studied. Seven AGN show evidence for obscuration in X-ray and optical bands, a fraction higher than in previous ROSAT or ASCA-ROSAT surveys (at a 95-99 % and 90 % confidence level respectively), thus supporting the scenario in which a significant fraction of the XRB is made by obscured AGN.Comment: MNRAS, revised version after minor referee comment

A search for gravitational lensing in 38 X-ray selected clusters of galaxies

We present the results of a CCD imaging survey for gravitational lensing in a sample of 38 X-ray-selected clusters of galaxies. Our sample consists of the most X-ray luminous (Lx>= 2x10^{44} erg s^{-1}) clusters selected from the Einstein Observatory Extended Medium Sensitivity Survey (EMSS) that are observable from Mauna Kea (dec > -40deg). The sample spans a redshift range of 0.15 0.5. CCD images of the clusters were obtained in excellent seeing. There is evidence of strong gravitational lensing in the form of giant arcs (length l > 8'', axis ratio l/w > 10) in 8 of the 38 clusters. Two additional clusters contain shorter arclets, and 6 more clusters contain candidate arcs that require follow-up observations to confirm their lensing origin. Since the survey does not have a uniform surface brightness limit we do not draw any conclusion based on the statistics of the arcs found. We note, however, that 60% (3 of 5) of the clusters with Lx > 10^{45} erg s^{-1}, and none of the 15 clusters with Lx < 4x10^{44} erg s^{-1} contain giant arcs, thereby confirming that high X-ray luminosity does identify the most massive systems, and thus X-ray selection is the preferred method for finding true, rich clusters at intermediate and high redshifts. The observed geometry of the arcs, most of which are thin, have large axis ratios (l/w > 10), and are aligned orthogonal to the optical major axes of the clusters, indicate the cluster core mass density profiles must be compact (steeper than isothermal). In several cases, however, there is also some evidence, in the form of possible radial arcs, for density profiles with finite core radii.Comment: Latex file, 17 pages, 7 jpeg figures, to be published in Astronomy and Astrophysics Supplement

Angiotensin type-2 (AT-2)-receptor activation reduces renal fibrosis in cyclosporine nephropathy: evidence for blood-pressure independent effect

Compound 21 (C21), selective agonist of AT2 receptors, shows antinflammatory effects in hypertension and nephroprotection in diabetes. The aim of this study was to evaluate the effects of C21 in cyclosporine nephropathy, which is characterized mainly by tubulo-interstitial fibrosis. Ten days before and during the experimental periods, low-salt diet was administered to Sprague Dawley rats. Cyclosporine-A (15mg/kg/day, i.p.) and cyclosporine-A plus C21 (0.3 mg/kg /day, i.p) were administered for 1 and 4 weeks. Control groups was left without any treatment. Blood pressure (plethysmographic method) and 24 hour albuminuria were measured once a week. At the end of the experiments, the kidneys were excised for histomorphometric analysis of renal fibrosis and for immunohistochemical evaluation of inflammatory infiltrates and type I and IV collagen expression.After 1 and 4 weeks, the rats treated with cyclosporine showed a significant increase (p &lt;0.01) in blood pressure, no significant changes in albuminuria, a significant increase (p &lt;0.01) in glomerular and tubulo-interstitial fibrosis and inflammatory infiltrates as compared to the control rats. Treatment with C21 did not modify the cyclosporine dependent increase of blood pressure, which was higher than in control rats, but after 4 weeks of treatment significantly reduced (p &lt;0.01) glomerular and tubulo-interstitial fibrosis, type 1 collagen expression and macrophage infiltration, as compared to rats treated with cyclosporine.The administration of C21 showed a protective effect on cyclosporine nephropathy, decreasing renal fibrosis and macrophage infiltration. These data suggest that C21 may counteract tubulo-interstitial fibrosis, the most potent predictor of the progression of renal diseases

Problematic internet use and emotional dysregulation among young people: A literature review

Objective: In recent years scientific interest in Internet use disorders, especially among young people, has grown dramatically. Within this contemporary research field, difficulties in regulating emotions have been increasingly explored in association with problematic Internet use (PIU). Indeed, individuals who experience difficulties in emotion regulation might be more exposed to the risk of developing PIU. Therefore, the present study aimed to review the literature from the last ten years focused on the relationship between young people’s emotional dysregulation and PIU, taking into account the main variables involved in this relationship and possible gender-related differences. Method: This review included studies published between 2010 and 2020 that were indexed in major databases with the following keywords: emotion regulation, problematic Internet use, Internet addiction, social network addiction, and social media addiction. In the selection process of the studies, close attention was paid for the mean age of the involved samples that had to range between 13 and 25 years. Results: A total of 23 studies satisfied the initial inclusion criteria and were included in the present literature review. Several reviewed studies found a strong association between emotion dysregulation and both PIU and problematic social networking with controversial gender-based findings. Furthermore, the relationships among emotional dysregulation, PIU, attachment styles, and metacognitions were largely explored. Conclusions: Overall, the present review showed that problematic Internet use might represent a coping strategy to compensate for emotional regulation deficits. The lack of social support and the lack of a good parent-adolescent relationship seem to negatively affect emotional regulation abilities, which in turn increase the risk of developing PIU. Moreover, good metacognitive abilities might represent a protective factor towards emotional dysregulation and PIU. Finally, males with emotional dysregulation are likely to be more problematically engaged in Internet use than females. These results might have important practical implications to implement health prevention/promotion programs, emotion regulation-based training programmes and therapies

Selfie-engagement on social media: pathological narcissism, positive expectation, and body objectification – which is more influential?

The current use of social media platforms by active young users/creators of visual content provides an easy medium to achieve narcissistic goals of self-promotion and attention-seeking, and to socialize with self-objectification experiences. One of the most popular activities associated with social media use is selfie-sharing. Consequently, the global focus on online physical appearance approval could reinforce selfie-engagement as a specific body image-related behavior, potentially associated with selfie-marketing strategies for self-improvement, and problematic social media use. The present study evaluated the main direct effect of pathological narcissism, objectified body consciousness, and expectations toward selfies on young women’s and men’s selfie-engagement. A total of 570 young adults (66.8% females; mean age = 24.4 years, SD = 3.6) participated in an online survey study. Variables were assessed using the Pathological Narcissism Inventory (Fossati, Feeney, Pincus, Borroni, & Maffei, 2015), Objectified Body Consciousness Scale (Dakanalis et al., 2015), Selfie-expectancies Scale (Boursier & Manna, 2018), and a measure of selfie-engagement. Hierarchical regression analyses were performed on independent male and female subsamples. Results showed that body surveillance and positive selfie-expectancies are consistent selfie-behavior predictors, among both men (R2 = 0.227; p < .001) and women (R2 = 0.332; p < .001). Furthermore, findings confirm women’s involvement in appearance concerns and body-image related practices, even though men’s engagement in body-objectification deserve attention. The study provides novel findings in the field of self-objectification research as well as contributing to the ongoing debate concerning which psychological factors can be predictive of males' and females' selfie-engagement. The implications of these findings are also discussed in light of the debate on social media use and misuse