In conditionals (if-then-clauses) a single head nod can introduce a consecutive clause (starting with “then”) in Austrian Sign Language. In the example “if a hut is open, then I go in” a single head nod introduces the consecutive clause. The head nod is sufficient for introducing this clause, signs such as YES or THEN are not required. However, if the consecutive clause is negated (e.g. “If this person is present, then I do not go in.”), the consecutive clause cannot be introduced by a head nod. Negated clauses are accompanied by headshakes.