History of PS

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A genealogy that argues against the genealogy it is usually asked for. The familiar arc, Rogers to Edmondson to Google to somebody's next leadership programme, is named here and set aside: the claim is convergence rather than descent, with psychologists, organisational theorists, quality thinkers, safety scientists and engineers arriving repeatedly at the same problem without shared language or much awareness of each other. It opens and closes on the Vasa, lost in 1628 because the people who thought she would sink could not be heard; the question is older still, and the Greeks had parrhesia for honest speech that holds power to account.

The strands are traced separately. Rogers coined the term in 1954 for a condition of unconditional worth deliberately free of external evaluation, which sets up the irony that the field inheriting it spent its energy on measurement instruments. Lewin gave behaviour as a function of person and environment; McGregor supplied the loop, where assumptions about people become structures of control that elicit the behaviour the assumptions predicted, which is why low-safety climates are stable, because they manufacture their own evidence. Then Argyris on defensive routines and the gap between espoused theory and theory-in-use, Tavistock on socio-technical systems, Schein and Bennis giving the first explicit organisational definition in 1965, and Deming arriving from quality management with drive out fear.

Safety science ran in parallel and largely apart: high reliability organisations, and crew resource management after Tenerife, where the piece corrects the popular telling, since the flight engineer did query whether the Pan Am aircraft was clear and was overridden, making it a case of attenuated speech rather than silence. Then Bromiley in 2005, where the nurses had readied the equipment and could not find a way to say so; Challenger and Columbia as the harder case of a concern never raised at all, absorbed into normal practice as Vaughan's normalisation of deviance; the Andon cord read as obligation rather than heroics, since someone is always required to come and listen; and the shift through Hollnagel and Dekker to HOP.

The academic turn is brisk: Kahn in 1990 at the individual level, Edmondson in 1999 making it a team-level construct with an instrument, then Project Aristotle, the 2016 New York Times piece and The Fearless Organization carrying it to a general audience. The closing section is the argumentative one. ISO 45003 and the Australian regulations are welcomed as floors, with the caveat that regulation crystallises a concept at whatever depth it had reached, and compliance-shaped safety becomes a policy, a survey and a checklist. Psychological safety is reported as unevenly distributed and correlated with power, those with least power having least of it, and their own analysis finds professional-network scepticism tracking markers of relative privilege. It lands on the organisational fabric and its ecotones rather than teams in isolation, on ecology as analytical lens rather than metaphor, and on a rights-based reading: not a tool for optimising performance but a condition of dignity at work.

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