From: Controlling item difficulty for automatic vocabulary question generation
Combination | Factor | ||
---|---|---|---|
 | RPD | SIM | DWD |
LLL | Low | Low | Low |
LLH | Low | Low | High |
LHL | Low | High | Low |
LHH | Low | High | High |
HLL | High | Low | Low |
HLH | High | Low | High |
HHL | High | High | Low |
HHH | High | High | High |