Seems to me that mental energy is lost by frustration. If what you are doing is fun, you can do it for a log time; if it frustrates you at every moment, you will get “tired” soon.
The exact mechanism… I guess is that some part of the brain takes frustration as an evidence that this is not the right thing to do, and suggests doing something else. (Would correspond to “1b” in your model?)
Seems to me that mental energy is lost by frustration. If what you are doing is fun, you can do it for a log time; if it frustrates you at every moment, you will get “tired” soon.
The exact mechanism… I guess is that some part of the brain takes frustration as an evidence that this is not the right thing to do, and suggests doing something else. (Would correspond to “1b” in your model?)