Published studies are listed at alexandertechnique.co.uk, with unpublished studies, theses and dissertations listed at Alexander Studies Online.  If you are scientifically minded alexandertechniquescience.com is also interesting!   Below is a selection of published scientific papers.

Back pain  Little, P., Lewith, G., Webley, F., Evans, M., Beattie, A., Middleton, K., Barnett, J., Ballard, K., Oxford, F., Smith, P., Yardley, L, Hollinghurst, S., & Sharp, D. (2008). Randomised controlled trial of Alexander Technique lessons, exercise, and massage (ATEAM) for chronic and recurrent back pain. British Medical Journal, 33. https://doi.org/10.1136/bmj.a884

Neck pain  MacPherson, H., Tilbrook, H. E., Richmond, S.J., Woodman, J., Ballard, K., Atkin, K., Bland, M., Eldred, J., Essex, H., Hewitt, C., Hopton, A., Keding, A., Lansdown, H., Parrott, S., Torgerson, D., Wenham, A., & Watt, I. (2015). Alexander Technique lessons, acupuncture sessions or usual care for persons with chronic neck pain: A randomised controlled trial. Annals of Internal Medicine, 163(9), 653-62. https://doi.org/10.7326/M15-0667

Wellbeing  Kinsey, D., Glover, L., & Wadephul, F. (2021). How does the Alexander Technique lead to psychological and non-physical outcomes? A realist review. European Journal of Integrative Medicine, 46(101371). https://doi.org/10.1016/j.eujim.2021.101371 

Overall model (the video)  Cacciatore, T. W., Johnson, P. W., & Cohen, R. G. (2020). Potential mechanisms of the Alexander Technique: Toward a comprehensive neurophysiological model. Kinesiology Review, 9(3), 199-213. https://doi.org/10.1123/kr.2020-0026

Older people with a fear of falling   Glover, L., Kinsey, D., Clappison, D. J., Gardiner, E., & Jomeen, J. (2018) “I never thought I could do that…”: Findings from an Alexander Technique pilot group for older people with a fear of falling. European Journal of Integrative Medicine, 17, 79-85. https://doi.org/10.1016/j.eujim.2017.11.008

Musicians  Klein, S. D., Bayard, C., & Wolf, U. (2014). The Alexander Technique and musicians: a systematic review of controlled trials. BMC Complementary and Alternative Medicine, 14, 414. http://www.biomedcentral.com/1472-6882/14/414

Parkinson's disease  Stallibrass, C., Sissons, P., & Chalmers, C. (2002). Randomized controlled trial of the Alexander Technique for idiopathic Parkinson’s disease. Clinical Rehabilitation, 16, 705-718. https://doi.org/10.1191/0269215502cr544oa (NICE Guideline NG1 includes the statement that Alexander Technique should be considered for people with Parkinson’s disease who are experiencing balance or motor function problems.)