Comparer des méthodes

	Échelle de leadership transformationnel	Échelle de sécurité psychologique
Domaine	Comportement organisationnel	Comportement organisationnel
Famille	Process / pipeline	Process / pipeline
Année d'origine	1985	1999
Auteur d'origine	Bernard M. Bass and Bruce J. Avolio	Amy C. Edmondson
Type	Self-report questionnaire	Team-level self-report questionnaire
Source fondatrice	Bass, B. M. (1985). Leadership and performance beyond expectations. New York: The Free Press. ISBN: 978-0029015001	Edmondson, A. C. (1999). Psychological safety and learning behavior in work teams. Administrative Science Quarterly, 44(2), 350-383.
Alias	TLS, MLQ, Multifactor Leadership Questionnaire	PSS, Team Psychological Safety Scale
Apparentées	5	5
Résumé	The Transformational Leadership Scale (TLS), operationalized in the Multifactor Leadership Questionnaire (MLQ), was developed by Bass and Avolio (1985, 1991) to measure leadership styles across a continuum from transactional to transformational. Transformational leadership comprises four dimensions: idealized influence (role modeling and inspiration), inspirational motivation (articulating compelling vision), intellectual stimulation (encouraging innovation), and individualized consideration (personalized development). The scale has become foundational in organizational psychology and management research for understanding leadership effectiveness and organizational outcomes.	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.