Linda C. Sobell and Mark B. Sobell

 

More than 20 years of use and testing have shown that the Timeline FollowBack (TLFB) is an effective tool for measuring alcohol use. The detailed information generated by the TLFB helps people better understand their drinking, which can motivate change. The TLFB can also be used to collect information about marijuana, tobacco and other drug use.

 

Includes paper-and-pencil version of the Timeline FollowBack calendar method.