Do the PTB MiniBig sessions include the same questions as the PTB Mini Mocks or the  PTB Big Mock Exam?

No. The MiniBig mock exams contain unique questions drawn from current literature and academic sources. The questions have been peer-reviewed by veteran BCBAs Courtney E. Bloom, MA, BCBA®, and Celia Heyman, PhD, BCBA-D. You can view the comparison chart for the PTB MiniBig, PTB Mini Mocks, and the PTB Big Mock Exam here.