An acceptability judgment task, also called acceptability rating task, is a common method in empirical linguistics to gather information about the internal grammar of speakers of a language.
The goal of acceptability rating studies is to gather insights into the mental grammars of participants.
The difference between acceptability and grammaticality is linked to the distinction between performance and competence in generative grammar.
Forced choice and yes-no rating tasks are also common.
Besides more popular test types, there are other methods like thermometer judgments or magnitude estimation (ME); however, it has been argued that ME studies have unproductive variation in their results.