Synchronous learning is effective and should be used slightly in courses. Asynchronous learning should be used throughout the course where students can post an intelligent, lengthy response to the instructor in the course. Instructors will have time to respond back to the student with feedback on quality responses. Asynchronous must be most effective because this training certificate that we are completing now at CEE is a threaded asynchronous learning tool. So based on the effectiveness on asynchronous learning is the best route to go from my expert opinion including the way this course is designed and used by The Center for Excellence in Education. Point proven!