154 Sam J. Cooley et al.
Co^te-Boileau, E., Denis, J. L., Callery, B., & Sabean, M. (2019). The unpredictable journeys of
spreading, sustaining and scaling healthcare innovations: A scoping review. Health Research
Policy and Systems, 17, 1–26. https://doi.org/10.1186/s12961-019-0482-6
Edmondson, A. C. (2018). The fearless organization: Creating psychological safety in the
workplace for learning, innovation, and growth. Hoboken, NJ: John Wiley & Sons.
Gaminiesfahani, H., Lozanovska, M., & Tucker, R. (2020). A scoping review of the impact on children
of the built environment design characteristics of healing spaces. HERD: Health Environments
Research & Design Journal, 13, 98–114. https://doi.org/10.1177/1937586720903845
Gov.uk. (2020, December 19). New sites to test how connecting people with nature can improve
mental health [press release]. Retrieved from https://www.gov.uk/government/news/new-site
s-to-test-how-connecting-people-with-nature-can-improve-mental-health
Greenhalgh, T., & Papoutsi, C. (2019). Spreading and scaling up innovation and improvement. BMJ,
365, 2068. https://doi.org/10.1136/bmj.l2068
Huisman, E. R., Morales, E., van Hoof, J., & Kort, H. S. (2012). Healing environment: A review of the
impact of physical environmental factors on users. Building and Environment, 58, 70–80.
https://doi.org/10.1016/j.buildenv.2012.06.016
Jordan, M. (2014). Moving beyond counselling and psychotherapy as it currently is- taking therapy
outside. European Journal of Psychotherapy & Counselling, 16, 361–375. https://doi.org/10.
1080/13642537.2014.956773
Jordan, M. (2015). Nature and therapy: Understanding counselling and psychotherapy in
outdoor spaces. London, UK: Routledge.
Jordan, M., & Marshall, H. (2010). Taking counselling and psychotherapy outside: Destruction or
enrichment of the therapeutic frame? European Journal of Psychotherapy and Counselling,
12, 345–359. https://doi.org/10.1080/13642537.2010.530105
Kessel, M., Kratzer, J., & Schultz, C. (2012). Psychological safety, knowledge sharing, and creative
performance in healthcare teams. Creativity and Innovation Management, 21, 147–157.
https://doi.org/10.1111/j.1467-8691.2012.00635.x
Leis, J. A., & Shojania, K. G. (2017). A primer on PDSA: Executing plan–do–study–act cycles in
practice, not just in name. BMJ Quality & Safety, 26, 572–577. https://doi.org/10.1136/bmjqs-
2016-006245
Lewis, J., Ritchie, J., Ormston, R., & Morrell, G. (2014). Generalizing from qualitative research. In J.
Ritchie, J. Lewis, C. McNaughton Nicholls & R. Ormston (Eds.), Qualitative research practice: A
guide for social science students and researchers (pp. 347–366). London, UK: Sage.
Low, J. (2019). A pragmatic definition of the concept of theoretical saturation. Sociological Focus,
52, 131–139. https://doi.org/10.1080/00380237.2018.1544514
Lyth, I. M. (1988). The functioning of social systems as a defence against anxiety. In I. M. Lynth (Ed.),
Containing anxiety in institutions (pp. 43–85). London, UK: Free Association Books.
Mason, B. (1993). Towards positions of safe uncertainty. Human Systems, 4, 189–200.
Mason, B. (2019). Re-visiting safe uncertainty: Six perspectives for clinical practice and the
assessment of risk. Journal of Family Therapy, 41, 343–356. https://doi.org/10.1111/1467-
6427.12258
McKinney, B. L. (2011). Therapist’s perceptions of walk and talk therapy: A grounded study.
[Doctoral thesis, University of New Orleans]. Scholar Works. Retrieved from https://schola
rworks.uno.edu/td/1375/
Miller, J. C., & Krizan, Z. (2016). Walking facilitates positive affect (even when expecting the
opposite). Emotion, 16, 775–785. https://doi.org/10.1037/a0040270
Morgan, D. L. (2020). Pragmatism as a basis for grounded theory. The Qualitative Report, 25, 64–73.
https://doi.org/10.46743/2160-3715/2020.3993
Morrey, T., Larkin, M., & Rolfe, A. (2020). What claims are made about clients and therapists’
experiences of psychotherapy environments in empirical research? A systematic mixed-studies
review and narrative synthesis. Counselling and Psychotherapy Research, 20, 666–679.
https://doi.org/10.1002/capr.12336