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Several studies found that psychopathy is an important predictor of criminal behavior in general and of intimate partner violence in particular. However, these conclusions are often based on scales with less well-established validity, and some inconsistent results have emerged with regard to the contribution of specific psychopathic facets to intimate partner violence. In a sample of 152 batterers from Portugal aged between 22 and 70 years old, we examined whether Psychopathy Checklist-Revised (PCL-R) total scores and the four facets (scored based on a semistructured interview and on file information) predicted the frequency of intimate partner violence. Two separate linear regression analyses were conducted controlling for criminal variables. PCL-R total scores positively predicted intimate partner violence frequency, above and beyond the criminal variables. As for the four facets, only the PCL-R affective facet held a significant effect in predicting intimate partner violence frequency after controlling for criminal variables. These results support the inclusion of psychopathy in risk assessments and treatment of perpetrators of intimate partner violence, particularly with regard to the affective deficits of the construct.

Overuse of pesticides has resulted in environmental problems, threating public health through accumulation in food chains. Phytoremediation is a powerful technique to clean up contaminated environments. However, it is necessary to unravel the metabolic mechanisms underlying phytoremediation in order to increase the efficiency of this process. Therefore, growth, physiological and biochemical responses in leaves and roots of Solanum nigrum L. exposed to the commonly used fungicide metalaxyl were investigated. This species shows characteristics that make it valuable as a potential tool for the remediation of organic pollutants. We found that once inside the plant, metalaxyl altered carbon metabolism, which resulted in a reduction of growth and lower biomass accumulation due to impairment of carbohydrate production (total soluble sugar, starch, rubisco) and increased photorespiration (glycolate oxidase, Gly/Ser ratio). A significant increase of antioxidant defenses (polyphenols, flavonoids, tocopherols, ascorbate, glutathione, superoxide dismutase, catalase, peroxidases, monodehydroascorbate- and dehydroascorbate reductase, gluthatione reductase) kept reactive oxygen species (ROS) levels under control (superoxide anion) leaving cell membranes undamaged. The results suggest that enhancing carbon assimilation and antioxidant capacity may be target parameters to improve this species’ phytoremediation capacities.Highlights• Metalaxyl inhibits growth by reducing photosynthesis and inducing photorespiration• Elevated antioxidant defenses protect metalaxyl-treated plants from oxidative damage• Ascorbate and glutathione are key antioxidants in metalaxyl tolerance.

Cyber Dating Abuse (CDA) has been identified as a prevalent and negative experience for youth, which highlights the need to identify the factors associated with the occurrence of this phenomenon. Thus, this meta-analysis aims to determine the factors associated with youth CDA perpetration and victimization, identifying which of the factors present the strongest risk and protective effects. We identified 16 studies and 17 independent samples, including a total sample of 12,760 adolescents and young adults. Results showed that individual and intimate relation factors were related to both CDA perpetration and victimization, and peer factors were significantly associated with CDA perpetration; individual sociodemographic factors were unrelated to CDA. Findings from this meta-analysis provide valuable evidence to develop CDA prevention and intervention strategies.

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Algumas manifestações de violência no namoro ocorrem através do uso das novas tecnologias, pelo que importa investigar esta tipologia de abuso apelidada internacionalmente de cyber dating abuse. O presente estudo procurou traduzir e adaptar, para a população portuguesa, o Cyber Dating Abuse Questionaire (CDAQ; Borrajo, Gámez-Guadix, Pereda, & Calvete, 2015), estudando as suas propriedades psicométricas. A versão portuguesa foi administrada a uma amostra de 272 estudantes, a grande maioria (87%) de sexo feminino e com uma média de idades de 28.41 (DP=7.02). A análise fatorial confirmatória revelou bons índices de ajustamento, permitindo confirmar o modelo fatorial do instrumento original constituído por quatro fatores correlacionados, dois relativos à vitimação por agressão direta e controlo e dois à perpetração dessas mesmas tipologias de violência. Adicionalmente, todos os fatores revelaram boa consistência interna. Ainda que os indicadores de prevalência de vitimação e perpetração por controlo (58.8% vs. 63.2%, respetivamente) se tenham revelado mais preponderantes comparativamente aos de vitimação e perpetração por agressão direta (18% vs. 14.7%), foi possível confirmar que estes dois tipos de ciberabuso íntimo constituem comportamentos entre os jovens portugueses estudantes universitários envolvidos/as em relações íntimas. As implicações práticas e empíricas futuras deste estudo são objeto de discussão neste trabalho.Palavras-chave: Ciberabuso, Relações de namoro, Jovens. IntroduçãoO crescimento e avanço tecnológicos registados nas últimas décadas têm conduzido a um incremento das práticas digitais e do funcionamento em rede, sobretudo por parte dos adolescentes (Instituto Nacional de Estatística, 2017). O espaço virtual constitui um meio muito flexível e atrativo para encetar novas relações interpessoais, incluindo as amorosas, sendo que os jovens dispõem de uma ampla variedade de ferramentas digitais e tecnológicas (e.g., mensagens de texto e através das diferentes redes sociais, e-mails, telemóveis, o recurso à webcam, entre outros) seja para iniciar, desenvolver ou manter uma determinada relação amorosa (Burke, Wallen, Vail-Smith, & Knox, 2011). Não obstante, este recurso às novas tecnologias também poderá potenciar a emergência de outros problemas, na medida em que tornam os jovens mais vulneráveis à intrusividade 93 A correspondência relativa a este artigo deverá ser enviada para:

The primary aim of the present study was to examine the psychometric properties and measurement invariance of the Inventory of Callous-Unemotional Traits (ICU) self-report and its short version (ICU-12) among a mixed-sex normative sample of 782 Portuguese youth (M = 15.87 years; SD = 1.72). Confirmatory factor analysis revealed that the three-factor structure of the ICU obtained the best fit after the removal of two items, and the two-factor structure of the ICU-12 obtained the best fit after the removal of one item. Cross-sex measurement invariance was demonstrated for both versions of the inventory. The 22-item version of the ICU and its 11-item short form (ICU-SF) demonstrated generally adequate psychometric properties of internal consistency, convergent validity, discriminant validity, and criterion-related validity (e.g., with conduct disorder symptoms). In terms of known-groups validity, males scored significantly higher than females. Results suggest that the use of the ICU and ICU-SF among Portuguese-speaking youth is psychometrically justified.