Morningness-Eveningness-Stability-Scale improved (MESSi; Randelr et al., 2016)

Gorgol, J., Waleriańczyk, W., & Randler, C. (2023). Exploring the associations between the Morningness-Eveningness-Stability-Scale improved (MESSi) and the higher-order personality factors. Chronobiology International, 40(6), 812-823.

General Mattering Scale (GMS; Marcus and Rosenberg, 1987)

Gorgol-Waleriańczyk, J., Waleriańczyk, W., & Flett, G. L. (2025). Morningness-eveningness and mental health: Initial evidence of the moderating roles of mattering and anti-mattering. Chronobiology International, 1-12.

Anti-Mattering Scale (AMS; Flett et al., 2022)

Gorgol-Waleriańczyk, J., Waleriańczyk, W., & Flett, G. L. (2025). Morningness-eveningness and mental health: Initial evidence of the moderating roles of mattering and anti-mattering. Chronobiology International, 1-12.

Patient Health Questionnaire-9 (PHQ-9, Kroenke et al., 2011)

Gorgol-Waleriańczyk, J. (2025). Psychometric validation and frequencies of positive screenings in the Polish versions of the Patient Health Questionnaire-9 and Generalized Anxiety Disorder-7 in the general Polish population: a three-sample study. Current Psychology, 1-9.

Generalized Anxiety Disorder-7 (GAD-7, Spitzer et al., 2006)

Gorgol-Waleriańczyk, J. (2025). Psychometric validation and frequencies of positive screenings in the Polish versions of the Patient Health Questionnaire-9 and Generalized Anxiety Disorder-7 in the general Polish population: a three-sample study. Current Psychology, 1-9.