Yeah, there is also one other fly in the ointment when it comes to the Stanford Marshmallow test, and that is factors of trust in strangers and/or authority figures.
There are two ways to fail the test. The first is to immediately eat the marshmallow, and the second is to refuse to participate. Some kids won’t touch the first OR the second marshmallow.
Reminds me of something that happened recently. Hubby and I see the same doctor. He came home and was all glowing because when the doc game him a question on math during some test for dementia or something he had the answer to the math question before doc finished it and the doc told him....you broke my test. I said....see that’s the difference between you and me. I wouldn’t have taken the stupid test to begin with. lol