(By Matthew S. Dryer): "This map shows the position of question particles in polar questions. Polar questions are ones that elicit the equivalent of a ‘yes’ or ‘no’ response. This map does not include interrogative affixes on verbs, although it should be noted that the distinction between interrogative affixes and separate interrogative particles is often hard to make. The map treats interrogative clitics that can attach to words of different categories as question particles."