So sánh phương pháp

	Thang đo Lãnh đạo Phục vụ (Servant Leadership Scale - SLS)	Thang đo An toàn Tâm lý
Lĩnh vực	Hành vi tổ chức	Hành vi tổ chức
Họ	Process / pipeline	Process / pipeline
Năm ra đời	2008	1999
Người khởi xướng	Robert K. Greenleaf (concept); Robert C. Liden et al. (measurement scale)	Amy C. Edmondson
Loại	Self-report questionnaire	Team-level self-report questionnaire
Công trình gốc	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.	Edmondson, A. C. (1999). Psychological safety and learning behavior in work teams. Administrative Science Quarterly, 44(2), 350-383.
Tên gọi khác	SLS, Servant Leader Scale	PSS, Team Psychological Safety Scale
Liên quan	5	5
Tóm tắt	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.	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.