Some key differences between the BDI-2 and BDI-3 include:
Demographic differences
Repositioning of test items
Updated test content
Revised item scoring criteria
Differences in derived scores
Because of these differences, trying to compare the BDI-2 to the BDI-3 is like trying to compare apples to oranges.
*Please see the article below for more information:
BDI-2 vs BDI-3: It's No 'Apples to Apples' in the Assessment World (riversideinsights.com)