Contribution of Some Positive Variables (Happiness, Optimism, Hope) to the Level of Psychological Health in the Practitioners of the Nursing Profession in Algeria. Journal Of Educational and Psychological Researches, [S. l.], v. 17, n. 65, p. 171–189, 2022. Disponível em: https://jperc.uobaghdad.edu.iq/index.php/jperc/article/view/1055. Acesso em: 5 may. 2025.