Various (e.g., Mochizuki, H., or Yamada, Y. in Japanese Journal of Behavior Analysis ).
It seems you're looking for a good paper about a topic you've spelled as . oshikko sensei
The most famous and frequently cited academic paper on this subject is: Title: Toilet training the retarded: A rapid program for day and nighttime independent toileting. Various (e
Based on the spelling and context, it is highly likely you are referring to — which translates to "Pee-Pee Teacher" or "Mr./Ms. Pee" — a well-known case study in behavioral psychology , specifically regarding operant conditioning and toilet training in children with developmental disabilities . oshikko sensei