The Infidelity Scale: Psychometric properties and gender invariance among Portuguese adults

Abstract

Introduction: Infidelity is a breach of trust or a crossing of the boundaries of the primary relationship and it influences intimate relationships. It can be categorised as either sexual or emotional infidelity. In Portugal, there have been few studies on this subject using suitable instruments. Objective: This study aimed to analyse the factor structure, psychometric properties, and gender invariance of the Infidelity Scale (IS) in Portuguese adults. Method: The sample comprised 660 Portuguese adults (455 women and 205 men) between 18 and 79 years of age who had been unfaithful in their relationships. Results: The confirmatory analysis showed a structure with two factors (sexual and emotional infidelity), and good values for convergent and discriminant validity were found. The results displayed a satisfactory model fit and the non-invariance of the factor structure between women and men. Conclusion: This is the first Portuguese version of the IS, an instrument for the study of intimate relationships which contributes to the development of multicultural research.

Effectiveness of an Educational Package Based on the Theory of Five-Factor Positive Thinking Skills on Psychological Capital Components in Adults

“…Consequently, with improved mental health against life's pressures, their optimal performance level throughout life can be maintained (Chamzadeh Ghanavati et al, 2022). The results align with the prior research (Almeida & Ifrim, 2023;Chamzadeh Ghanavati et al, 2022;Kianpour Barjoee et al, 2022;Sooreh et al, 2023;Taherkhani et al, 2023), which reported the positive impact of positive thinking skills training on cognitive and behavioral changes. Positive thinking can be accentuated by considering ways of viewing 103 E-ISSN: 3041-8518 events and is a significant source of motivation for individuals to continue their daily lives.…”

“…In general, the anterior and posterior cingulate cortex and parts of the right hemisphere play a special role in thoughtful problem-solving (Kianpour Barjoee et al, 2022). Almeida and Ifrim (2023) in their research titled "Psychometric Benefits of Positive Thinking Skills Scale among Portuguese Adults," tested 220 adults aged 18 to 62. They stated that positive thinking leads to more positive emotions, adaptive behaviors, and better problem-solving.…”

“…They stated that positive thinking leads to more positive emotions, adaptive behaviors, and better problem-solving. Positive thoughts can be inspiring for individuals and enhance psychological health (Almeida & Ifrim, 2023). Yaghobi and Khalilpoor (2022) examined the effect of positive mood on increasing hope and stated that a positive mood increases hope in an individual, leading to health and well-being.…”

Psychometric Properties and Scale Invariance of Positive Thinking Skills Scale (PTSS) in Medical Students

“…The Con rmatory Factor Analysis (CFA) supported the unifactorial structure proposed in the original version (3,29) and in Turkish (28), Arabic (54) and Portuguese (55) adaptations. This nding underscores the reliability and validity of the PTSS, a rming its relevance across various cultural contexts.…”