Compare methods

	Within-and-Between Analysis	Psychological Safety Scale
Field	Organizational Behavior	Organizational Behavior
Family	Regression model	Process / pipeline
Year of origin	1984	1999
Originator	Fred Dansereau, Joseph Alutto & Francis Yammarino	Amy C. Edmondson
Type	Levels-of-analysis decomposition and inference method	Team-level self-report questionnaire
Seminal source	Dansereau, F., Alutto, J. A., & Yammarino, F. J. (1984). Theory Testing in Organizational Behavior: The Varient Approach. Prentice-Hall. ISBN: 9780133595079	Edmondson, A. C. (1999). Psychological safety and learning behavior in work teams. Administrative Science Quarterly, 44(2), 350-383.
Aliases	WABA, Within and Between Entities Analysis, Dansereau WABA, Levels-of-Analysis Analysis	PSS, Team Psychological Safety Scale
Related	3	5
Summary	Within-and-Between Analysis (WABA) is a methodology for determining the level of analysis at which a relationship between variables actually operates, developed by Fred Dansereau, Joseph Alutto, and Francis Yammarino in their 1984 book on the varient approach to theory testing. The central question it answers is whether an observed correlation reflects a group-level phenomenon (differences between work units), an individual-level phenomenon (differences among individuals within units), both, or neither. WABA decomposes the variance of each variable, and the covariance between variables, into between-entity and within-entity components, then applies statistical and practical tests to draw a levels inference. Yammarino and Markham's 1992 application showed how WABA can overturn casual assumptions, demonstrating that phenomena presumed to be group-based may in fact be individual-based. Klein, Dansereau, and Hall's 1994 review situated WABA within a broader argument that levels of analysis must be specified in theory, measurement, and analysis alike. WABA forces researchers to test, rather than assume, the level at which their constructs live.	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.