???Ну как бэ там в подтверждение внушительный список из 19 серьёзных научных работ из разных стран и лет. Даже ранняя редакция ссылается как на подтверждение следующий список работ. Вы это хотите назвать МНЕНИЕМ, ОДНОГО ЧЕЛОВЕКА и аргументировать ссылкой на ВИКИПЕДИЮ? American Academy of Pediatrics. Guide to Toilet Training.1st ed. 2003. 224 pp.Brazelton T. B. A child-oriented approach to toilet training // Pediatrics. 1962. Vol. 29. P. 121–128.Christophersen E. R. Toileting problems in children // Pediatr. Ann. 1991. Vol. 20. P. 240–244.Stadtler A. C., Gorski P. A., Brazelton T. B. Toilet training methods, clinical interventions, and recommendations. American Academy of Pediatrics // Pediatrics. 1999. Vol. 103. P. 1359–1368.Brazelton T. B., Christophersen A. R., Frauman A. C., Gorski P. A. et al. Instructions, timeliness, and medical influences affecting toilet train-ing //Pediatrics. 1999. Vol. 103. P. 1353–1358.Stadtler A. C., Gorski P. A., Brazelton T. B. Toilet training methods, clinical interventions, and recommendations. American Academy of Pediat-rics // Pediatrics. 1999. Vol. 103. P. 1353–1358.Сommunity Paediatrics Committee CPS. Toilet learning: anticipa-tory guidance with a child-oriented approach // J. Paediatr. Child Health. 2000. Vol. 5. P. 333–335.Foxx R. M., Azrin N. H. Dry pants: a rapid method of toilet training children // Behav. Res. Ther. 1973. Vol. 11. P. 435–442.Shaum T. R., McAuliffe T. L., Simms M. D., Walter J. A. et al. Fac-tors associated with toilet training in the 1990 s // Ambul. Pediatr. 2001. Vol. 1. P. 79–86.Russell K. Among healthy children, what toilet-training strategy is most effective and prevents fewer adverse events (stool withholding and dysfunctional voiding)? Part A: Evidence-based answer and sum-mary // Paediatr. Child Health. 2008. Vol. 13. P. 201–202.Lang M. E. Among healthy children, what toilet-training strategy is most effective and prevents fewer adverse events (stool withholding and dysfunctional voiding)? Part B: Clinical commentary // Paediatr. Child Health. 2008. Vol. 13. P. 203–204