I set 100 to be "full speed", so how much a student will learn if they have one hour of classes. The values represent how much they actually learn per hour if they work a certain amount of hours. For instance if they work 50 hours, then the actual output per hour is half of what they would do if they only had 1 hour.Yes, I didn't understand that list of values; the declining percentages set against number of hours. What made you ascribe those values and how do they apply to the graph? What are those values on the Y axis, btw?
Actually my experience is that teens are better at working longer hours than adults are. We get tired, and get headaches. Kids/teens generally don't. They are doing very long hours in Shanghai, but Shanghai crushed all competition. If the peak was at for instance 40 hours, then Chinese kids should do worse as it is normal to do about 60 hours per week.I would challenge, as I did, the position of the peak of the parabola at 50+ hours. I might accept that at graduate, or even under-graduate level, not at age 15.
Sounds good.Still, a useful and interesting exercise. I'm going to do some study and see if I can find research data to back up both your and my theories.