11.   Observing the behavior of those around you can be interesting and informative.

12.   Researchers also observed the behavior of customers who received the coupons while they were in the drugstores.

13.   Second, White observed chimp behavior suggesting a war atmosphere.

14.   Several whale-watching expedition operators now offer space on their boats to researchers, who use the trips to observe whale behavior and to track the population.

15.   So what should you do if you observe these behaviors?

16.   Such lemming-like behavior often is observed in overripe markets.

17.   The marshals were directed to handle the reigning pooh-bahs with kid gloves and refrain from action even if they observed objectionable behavior.

18.   The script by Eyre and Charles Wood is attentive and fine in observing the behavior of this long-married pair.

19.   This includes observing the behavior of the more proficient opponent and learning from his or her style and technique.

20.   Attention deficit disorder, or ADD, usually is diagnosed in school-age children based on interviews and observed behavior.