Your summary is that there might be a difference between students and adults here, but isn’t the last paragraph of the quoted text saying that they considered this hypothesis, but that students were also non-hyperbolic when they tested them under the same protocol?
The students were more hyperbolic, but not much. That they advertise it that way just shows how much they wanted to find hyperbolic discounting somewhere, and makes their failure to that much more credible (unless it’s all an elaborate con!).
Your summary is that there might be a difference between students and adults here, but isn’t the last paragraph of the quoted text saying that they considered this hypothesis, but that students were also non-hyperbolic when they tested them under the same protocol?
The students were more hyperbolic, but not much. That they advertise it that way just shows how much they wanted to find hyperbolic discounting somewhere, and makes their failure to that much more credible (unless it’s all an elaborate con!).