Σύγκριση μεθόδων

	Κλίμακα Ψυχολογικής Ασφάλειας	Κλίμακα Ηγεσίας Υπηρέτη
Πεδίο	Οργανωσιακή Συμπεριφορά	Οργανωσιακή Συμπεριφορά
Οικογένεια	Process / pipeline	Process / pipeline
Έτος προέλευσης	1999	2008
Δημιουργός	Amy C. Edmondson	Robert K. Greenleaf (concept); Robert C. Liden et al. (measurement scale)
Τύπος	Team-level self-report questionnaire	Self-report questionnaire
Θεμελιώδης πηγή	Edmondson, A. C. (1999). Psychological safety and learning behavior in work teams. Administrative Science Quarterly, 44(2), 350-383.	Liden, R. C., Wayne, S. J., Zhao, H., & Henderson, D. (2008). Servant leadership: development of a multidimensional measure and multi-level assessment. The Leadership Quarterly, 19(2), 161-177.
Εναλλακτικές ονομασίες	PSS, Team Psychological Safety Scale	SLS, Servant Leader Scale
Συναφείς	5	5
Σύνοψη	The Psychological Safety Scale (PSS), developed by Amy Edmondson in 1999, measures team members' shared perception that they can take interpersonal risks—speaking up, asking questions, admitting mistakes, proposing new ideas—without fear of embarrassment, punishment, or rejection. The 7-item scale captures a team-level construct fundamental to learning, innovation, and psychological well-being. High psychological safety predicts team performance, learning from errors, information sharing, and adaptive responses to change.	The Servant Leadership Scale (SLS), developed by Liden and colleagues in 2008, measures the extent to which leaders prioritize others' well-being and development. Building on Robert Greenleaf's 1970 concept of servant leadership, the SLS operationalizes servant leadership across seven dimensions: emotional healing, creating value for community, conceptual skills, empowering others, helping followers grow and succeed, putting followers first, and behaving ethically. The scale enables assessment of leadership styles that foster trust, engagement, and organizational effectiveness.