11.   Meanwhile, there are rational explanations for this seemingly irrational behavior.

12.   Norman Nouskajian, a San Diego lawyer, said the irrational behavior of other investors drove him to sell most of his stocks six weeks ago.

13.   Obsessing about the possible negatives of future global warming while dismissing the immediate problems of ill-advised environmental regulation is irrational behavior.

14.   People tend to deny their irrational sides, and this is a perfect example of irrational behavior.

15.   Passed from person to person, it turns whoever possesses it into a romantic fool prone to jealous rages and irrational behavior.

16.   They often drink heavily, abuse drugs and are prone to bouts of irrational behavior, kind of like they were members of Congress.

17.   Twenty years ago, when he was a student at Princeton, Mankiw of Harvard could not have taken an economics course in irrational behavior.

18.   Weeks before, she had left him, concerned about his increasingly irrational behavior.

19.   We have become confused, searching for rational national policy out of irrational human behavior.

20.   He was controlling the mental ailment, which triggers irrational behavior, with medication.