No. People who are confronted with a task that don't search for a solution but for a priblem within it are more creative. The consequence was that some barely produced solutions within the time constraint. Those were more succesfull as artists, the article states, while a quite a few of the other folks dropped out of art. Consequentially I'd like to add: They found the solution to the problem of living as an artist in quitting art - quite reasonably

This is the conclusion of the article (and presumably the researchers) but I don't think it necessarily follows.

It seems to me equally plausible that one group were more interested in the craft of an accurate depiction, while the other was more interested in the arrangement of a pleasing aesthetic - both could be considered "solutions" to the given task.