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A username and password were created at time of purchase or provided by BDS staff. If you need assistance, please email customer service at
Emails are responded to within 24 hours.

Effective 9/5/19, additional content has been added to the CBA Learning Module Series:

Added to TL4 (version 8):
F-08 Part 1 Acquisition and F-08 Part 1 Fluency
F-08 Part 2 Acquisition and F-08 Part 2 Fluency

Added to TL5 (version 9):
G-11 Part 8 Acquisition and G-11 Part 8 Fluency
G-11 Part 9 Acquisition and G-11 Part 9 Fluency

The recorded % completed on your dashboard and reports will be affected by the additional modules.
If you sat for the BCBA/BCaBA exam in August 2019, BDS will accept 98.97% completion for the money back policy and 69.23% for the free extension policy.
Module completion must be within 6 months from the actual exam date.

Applied Behavior Analysis, 3rd Ed. Now Available in our Bookstore

SYSTEM REQUIREMENTS: We recommend using Google Chrome on Desktops and Laptops. Program issues may occur due to the use of an incompatible browser. For a list of compatible browsers and devices, and recommendations click here.


1. Try another browser
2. Try another device
3. Hard refresh your browser: (close and restart your browser)
4. Clear your cache: (close and restart your browser)