Who coined the phrase aha moment?

Related questions

1. What is the question for aha moment?
2. What is a memory moment signpost?
3. What is an epiphany moment?
4. What is the aha moment called?
5. What is the aha moment of a plot?
6. What's a sign post?
7. What is the Epiphany Catholic?
8. What is a tough question signpost?
9. What are signposts in a story?
10. What is the anchor question for an aha moment?

Tags

1. #official
2. #attempted
3. #around
4. #regularly
5. #trademark
6. #sponsor
7. #mutual
8. #moment
9. #program
10. #apparently
11. #television
12. #omaha
13. #marketing
14. #campaign
15. #phrase
16. #winfrey