>The abstract does not define, nor contextually suggest from the prior statements of the results what "metacognitive laziness" means.
Your comment seems like a good example of metacognitive laziness: not bothering to formulate your own definition from the examples in the abstract and the meaning of the words themselves. Slothful about the the process of thinking for yourself.
I reread the abstract 3 times. The results stated prior to that definition simply don't follow consistently with the component meaning of those two words as I understand them.
The writer has the responsibility to be clear.