Vocal learning, problem solving, and brain size among some birds may have evolved in tandem, perhaps as a way to increase biological fitness.

Avoiding the worst options can be as key to problem solving as finding the best option. New research digs into how the brain knows it's on the wrong track.

When solving problems, we tend to rely on things that have worked in the past, which psycholgists call "fixation." Other ideas may get you out of the rut.

Language aptitude is a better predictor of learning to code than math skills, researchers find.