Various (e.g., Mochizuki, H., or Yamada, Y. in Japanese Journal of Behavior Analysis ).
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
If you meant something else entirely (e.g., a researcher named "Oshikko" or a different field), please provide more context. But based on common academic queries, the paper is the definitive starting point. Various (e
Behaviour Research and Therapy , 9(1), 31–41. oshikko sensei
It seems you're looking for a good paper about a topic you've spelled as .