STIs and HIV/AIDS are an important public health problem, transmitted by risky sex behaviours. In this context, it is necessary to identify protective factors, of those behaviours, as sexual self-concept. Sexual self-concept is a multidimensional trait (i.e. sexual self-esteem; sexual self-efficacy; and sexual assertiveness), but, in an extensive review, we did not find any measure to assess this multidimensional construct in a Spanish-speaking context. The objective of this research is development a scale to assess sexual self-concept in young people and adults. Time-space sampling with a total size of 792 participants, coming from the two Chilean cities (i.e. Arica and Iquique) with the highest HIV rates, aged between 17 and 53 years old (ME = 23.42; SD = 6.33), with 66.2% women (N = 500), 33.6% men (N = 258). Final scale has 16 items and 4 dimensions: sexual self-esteem, sexual self-efficacy, assertive sexual communication, and assertive sexual behaviour. The identified structure provides satisfactory levels of reliability (ω > .8) and presents robust evidence of validity, based on the internal structure of the test, using ESEM (RMSEA = .060; CFI = .99; TLI = .98), evidence of validity based on relationship to other variables (i.e. risky sexual behaviour) and measurement invariance between men and women. The multidimensional scale of sexual self-concept has adequate psychometric properties to assess sexual self-concept in equivalent samples.

中文翻译：

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在西班牙语环境中性自我概念多维范围的发展和有效性证据

性传播感染和艾滋病毒/艾滋病是一个重要的公共卫生问题，通过危险的性行为传播。在这种情况下，有必要确定那些行为的保护因素，作为性自我概念。性自我概念是一个多维特征（即性自尊，性自我效能感和性自信），但是在广泛的综述中，我们没有找到任何方法可以在西班牙语环境中评估这种多维结构。这项研究的目的是开发一种评估年轻人和成年人性自我概念的量表。时空抽样，共有792名参与者，来自两个HIV感染率最高的智利两个城市（即Arica和Iquique），年龄在17至53岁之间（ME = 23.42； SD = 6.33），占66.2％女性（N = 500），男性（N = 258）的33.6％。最终量表包括16个项目和4个维度：性自尊，性自我效能，自信的性交和自信的性行为。使用ESEM（RMSEA = .060; CFI = .99; TLI = .98），基于测试的内部结构，所确定的结构可提供令人满意的可靠性水平（ω> .8），并提供可靠的有效性证据。基于与其他变量（即危险的性行为）之间的关系以及男女之间的测量不变性而确定效度。性自我概念的多维量表具有足够的心理计量学性质，可以评估同等样本中的性自我概念。8）并根据测试的内部结构，使用ESEM（RMSEA = .060; CFI = .99; TLI = .98）给出了有力的有效性证据，基于与其他变量的关系（即危险性行为）提供了有效性证据行为）和男女之间的度量不变性。性自我概念的多维量表具有足够的心理计量学性质，可以评估同等样本中的性自我概念。8）并根据测试的内部结构，使用ESEM（RMSEA = .060; CFI = .99; TLI = .98）给出了有力的有效性证据，基于与其他变量的关系（即危险性行为）提供了有效性证据行为）和男女之间的度量不变性。性自我概念的多维量表具有足够的心理计量学性质，可以评估同等样本中的性自我概念。