Clausal and phrasal coordination in recent American English

Several studies have shown that there is considerable cross-genre variation as regards what linguistic units tend to be coordinated by and. While literate, expository writing favors coordination of phrasal units such as noun phrases, coordinated units are more often clausal (e.g., main or subordinate clauses) in speech-related texts. This difference has been attested in studies that focus exclusively on coordination as well as in macro-level studies of co-variation among a large number of linguistic features. However, this register differentiation has increased over time: studies of Early and Late Modern English point to less pronounced differences among registers than those attested in the present-day language. This study fills a gap in research by considering data on coordination by and from the middle of the 20th century, a period that does not belong fully to either Late Modern or Present-Day English, and the late 20th and early 21st century, and thus ties diachronic and synchronic research on register variation in coordination together. We also examine language from films and television in order to complement historical findings for speech-related language with data on registers that arose in the 20th century.