Noted, and thanks for clarifying. BTW when I get questions with typos/inversions (that are supposed to be logical or mathy questions), I tend to throw them back at the person asking, rather than simply ploughing forward. But I guess I'm the kind of person who does that sort of thing.

To be clear the paper's argument isn't that they're "bad at" the reasoning problems, so much as they're not using reasoning to solve them. In terms of getting the answer "turning the crank" with a canned solution can be more effective than reasoning through on deeper principles.