(By Jeremy Collins and Jay Latarche): "In this feature, we are looking for a polar interrogative particle which appears at the end of the clause. The particle should be dedicated to marking questions that ask for the equivalent of an affirmative or negative answer (as opposed to content questions). This particle does not have to be obligatory, and it is sufficient if the particle does not always appear in clause-final position. ❡
Dryer (2013) distinguishes neutral questions from leading questions in the paragraph quoted below. This feature in Grambank concerns neutral questions. ❡
"Many languages have question particles or expressions that indicate that the question is a leading question, one where the speaker has an expectation as to what the answer will be. English, for example, employs what are called "tag-questions" for this purpose, illustrated in (13a), which differ from the neutral question form illustrated in (13b) in that its form indicates that the speaker expects a ‘yes’ answer: (13a) You’re planning to go to the beach, aren’t you? (13b) Are you planning to go to the beach?" "