1.   The researchers tracked their gifts for the entire year.

2.   The researchers would track eye movement to see which picture the tots would choose.

3.   Researchers tracked the wild gorillas by following the piles of dung.

4.   For a control group, the researchers tracked six similar patients who had declined the leeches.

5.   He is not alone -- automotive researchers tracked the same attitude in the buying public for years.

6.   Participants were part of a separate, well-controlled study of calcium supplementation, which allowed the researchers to track calcium intake closely by counting pills and the like.

7.   Researchers track females, which weigh in at a little more than two pounds and can easily carry the three-quarter-ounce transmitter.

8.   Researchers tracked student achievement for the study groups through high school and beyond.

9.   That means, like the Gaffneys, they may want to find their own way, making them hard for researchers to track.