This volume brings together studies on morphosyntactic and phonological constituency from a host of languages across the Americas. The study expands on previous multivariate typological work on phonological domains by simultaneously coding the results of morphosyntactic constituency tests. The descriptions are geared towards developing a typology of constituency and linguistic levels in both morphosyntactic and phonological domains. The multivariate approach adopted in this volume deconstructs constituency tests and phonological domains into cross-linguistically comparable variables applying and extending autotypology method to the domain of constituent structure. Current methodologies for establishing constituents have been criticized for containing an in-built selection bias, where the results and interpretation of tests are chosen or sampled in such a fashion that specific analyses are prejudged to be correct or false in a non-rigorous fashion. The papers of this volume develop novel methodology for reporting and coding constituency variables for language description and comparison that seeks to reign in selection bias allowing theories concerning the relationship between morphosyntactic and phonological constituent structure to be more severely tested.