| Model structures | WAIC | ΔWAIC | WAIC SE | P WAIC |
---|---|---|---|---|---|
A | Mastery, TTFF partial mastery, informed reasoning based on attractiveness, informed reasoning with double-T endorsement bias, individual student performance | 18,520.7 | 0 | 200.0 | 342.1 |
B | − remove question-level mastery | 18,927.0 | − 406.3 | 199.1 | 288.7 |
C | − remove TTFF partial mastery | 18,566.0 | − 45.3 | 200.2 | 328.9 |
D | − remove TTFF partial mastery + replace with TTFF-TFTF partial mastery | 18,534.3 | − 13.6 | 199.7 | 341.8 |
E | − remove TTFF partial mastery + replace with TTFF-TFTF-TFFT partial mastery | 18,536.5 | − 15.8 | 199.5 | 333.5 |
F | − remove informed reasoning based on attractiveness + replace with random guessing | 19,582.4 | − 1061.7 | 203.4 | 268.4 |
G | − remove double-T bias | 18,656.1 | − 135.4 | 201.4 | 330.3 |
H | − remove double-T bias + replace with multi-T bias | 18,533.4 | − 12.7 | 200.3 | 344.6 |
I | − remove question-level double-T bias + replace with global double-T bias for each student | 18,539.6 | − 18.9 | 200.0 | 325.1 |
J | + add random guessing for students not in mastery, partial mastery, or informed reasoning | 18,519.9 | + 0.8 | 199.9 | 356.1 |
K | − remove individual student performance | 19,448.5 | − 927.8 | 196.7 | 180.2 |