John. A major part of the CFI curriculum is called FOI, Fundamentals Of Instructing. Done right it delves into teaching/learning psychology. Done poorly of course is just punching the right answer on the exam by rote. I used to be the DOE (Director Of Ed) at a major A&P school. We constantly worked on adding teaching/learning skills to the instructors kit. Unfortunately this does not seem to carry over to flight schools (I am also a CFI and have owned an FBO/Flt school). Your point is a good one and, other than the mandated CFI renewal “classes” developing instructional methods is rarely taught much after certification.