The article mentions that there are different types of memory, and that "working" memory, i.e. short-term, is the type that was found to be "reduced" by the stu

The article mentions that there are different types of memory, and that "working" memory, i.e. short-term, is the type that was found to be "reduced" by the study. Jeopardy trivia is almost certainly a different type of (long-term) memory.