This work takes an experimental approach to address the notoriously puzzling attachment of
adverbial clauses to their host clauses. On the basis of experiments gathering well-formedness
judgements the author shows that a multifactorial account which reflects both syntactic and
processing factors is required in order to capture this complex phenomenon. The author also
demonstrates that a new structural factor - clause-command - more successfully accounts for the
anaphorical relations between clauses than traditional c-command.