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- Depression and quality of life in older adults: Mediation effect of steep qualityPublication . Brandolim Becker, Nathália; de Jesus, Saul Neves; Viseu, João; Stobaus, Claus Dieter; Guerreiro, Mariana; Domingues, Rita B.Background/Objective: Sleep insufficiency, which affects more than 45% of the world's population, has a great importance when considering older adults. Thus, this research tested a mediation hypothesis, through a path analysis, which explains how depression relates to the quality of life considering the effect's of sleep quality in older adults. Method: A sample of 187 community-dwelling Portuguese older adults answered questionnaires about sociodemographic status (age, gender, highest level of education completed, family status, sports activities, health, and retirement status), quality of life, sleep quality, and depression. Descriptive and path analysis statistics were performed considering the results of the normality test. Results: The sample has health characteristics and presents adequate sleep duration. Sleep quality acted as a mediator between depression and the quality of life in older adults, considering the variation of gender and health. This suggests that it is important to establish self-care practices, namely sleep quality, to intervene in the ageing process. Conclusions: It is important to consider sleep quality associated with depression for older adults and to test interventions to minimize health impacts. Also, more researches are needed about the primary prevention in steep quality relating to depression. (c) 2017 Asociacion Espanola de Psicologia Conductual. Published by Elsevier Espana, S.L.U.
- Validity and reliability evidence of the psychological capital questionnaire-12 in a sample of Mexican workersPublication . Santana-Cardenas, Soraya; Viseu, João; Lopez Nunez, Maria Inmaculada; Neves de Jesus, SaulPsychological capital is a construct that is included in the positive organizational behavior framework, which is based on positive psychology principles. This concept is composed by four dimensions, self-efficacy, hope, resilience, and optimism, which have a synergistic action. The aim of this study was to report the psychometric properties of one of the measures of psychological capital, the Psychological Capital Questionnaire-12 (PCQ-12), in a sample of 396 Mexican workers. This instruments' factor structure was analyzed through a confirmatory factor analysis. Reliability was assessed with the Cronbach's Alpha and Composite Reliability coefficients. Furthermore, convergent and discriminant validity were also evaluated. Based on three concurrent models, it was observed that the model which possessed a better fit was composed by four-correlated factors. The implications of these results are discussed, and recommendations are provided for future researches. This paper, which presents a different factor structure than the usual of psychological capital, suggests that cultural differences may play a crucial role on the way the assessed construct behaves.