Etym. simulation (n.) noun of action from past participle stem of simulare “imitate,” from stem of similis “like.” Meaning “a model or mock-up for purposes of experiment or training” is from 1954.
Etym. reliable (adj.) 1560s, raliabill, Scottish; see rely + -able.
Definition
The consistency of a simulation activity, or the degree to which a simulation activity measures in the same way each time it is used under the same conditions with the same participants.
Compare: SIMULATION VALIDITY