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Navegando por Assunto "Sexual orientation"

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    Evidências de validade do male sexual function index em homens de diferentes orientações sexuais.
    (Universidade Federal do Pará, 2018-11-23) SILVA, Adna Janaína de Araújo; SILVA JÚNIOR, Mauro Dias; http://lattes.cnpq.br/2665950726942083; https://orcid.org/0000-0001-8544-4468; GOULART, Paulo Roney Kilpp; http://lattes.cnpq.br/7800966999068746
    Studies on factors involving male sexuality, such as sexual response (desire, arousal, erection, ejaculation, orgasm and satisfaction) and receptive anal sex usually have a clinical and pathological bias, especially in homosexual men. With the objective of investigating the male sexual response, we sought to find an instrument applicable to men with different sexual orientations that could be applied in a non-clinical population. From this general objective, the present dissertation is composed by two studies referring to the unfolding and difficulties to find a more comprehensive instrument possible. In study 1 a review of the literature was carried out in order to identify the instruments used to evaluate the sexual response of men from different orientations and from non clinical samples. As a main result, we found that only one instrument was broad enough to cover several aspects of the sexual response domains, the Male Sexual Function Index (MSFI), an instrument equivalent to that used to measure the female sexual response, which has already been validated in Brazil. From this, in study 2, we proposed to translate, adapt and verify the evidence of validity of the MSFI for Brazilian Portuguese, since it is a validated instrument in English and that measures five domains of sexual function (sexual desire, arousal, orgasm, erection and sexual/emotional satisfaction). In this study, the sample consisted of 206 heterosexual, 78 bisexual and 165 homosexual men, with sexual performances ranging from exclusively insertive to exclusively receptive, and the age was 18 to 65 years old. The results found indicated satisfactory internal consistency and correlations between the MSFI factors occurred according to the original version of the instrument. Regarding the external validity, the correlations occurred in the expected direction according to the literature. Although the adjustment index for the ejaculation factor was not satisfactory, the Male Sexual Function Index translated into the Portuguese language presented satisfactory evidence of validity. Therefore, it can be an important instrument to measure the sexual function of the male population of different sexual orientations.
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    Orientação sexual de gêmeos no norte do brasil
    (Universidade Federal do Pará, 2017-12-22) BRANDÃO, Flávia Inêz Barbosa; MAGALHÃES, Mauricio Oliveira; http://lattes.cnpq.br/7766377002832983; https://orcid.org/0000-0002-7857-021X; SOUSA, Regina Célia Gomes de; http://lattes.cnpq.br/5576436464955236
    The twin’s method can provide an effective way to estimate the effect of phylogenetic and ontogenetic factors on behavior. However, when reviewing the literature, it was noticed that in Brazil the studies with twins are recent and no research has yet been found on any aspect of sexuality using this methodology. Thus, in this exploratory study, the objective was to investigate the sexual orientation of twins in a sample in the northern region of the country. The twins responded, online and in person, to an inventory of zygosity, a socioeconomic questionnaire and Klein's sexual orientation grid. A total of 140 adult twins participated in this study, distributed in 42 pairs of monozygotic, 18 pairs of dizygotic and 20 individuals whose cotwins did not respond to the instruments. The participants' ages ranged from 18 to 37 years, with a mean age of 24.6 years. 69.3% of the twins were classified as monozygotic and 30.7% as dizygotic. Regarding sexual orientation, 64.9% of monozygotic individuals identified themselves as heterosexual only and 8.2% as gay only. While 65.1% of the dizygotic identified themselves as heterosexual only and 9.3% as gay only. The pairs of monozygotic twins presented significant intraclass correlation values for the three variables of sexual orientation investigated: "sexual attraction", "sexual behavior" and "self-identity", analyzed in three periods (past, present and ideal). Showing a concordance rate that varied between 28% and 42%. However, among the dizygotic twin pairs there was no correlation. The results indicated that aspects related to sexual orientation are not permanent, demonstrating that sexual orientation can be a dynamic process. These results were not sufficient to provide evidence that aspects related to sexual orientation are influenced by both genetic factors and environmental variables. For this, a larger number of participants and statistical analyzes of heritability would be necessary. Based on this study, a voluntary registry of twins was created in this region, which may contribute to novel studies, with a greater range of samples, mainly dizygotic, and more representative of non-heterosexual sexual orientations, allowing new discussions to be developed for a greater understanding of sexual orientation.
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