Across-the-Board

Rules apply across-the-board (ATB) if they may affect all conjuncts in a coordinate structure at the same time.

Example

Wh-movement applies across-the-board in:

I wonder which books_i [Mary hates e_i]_C1 and [Sam likes e_i]_C2

Comments

In this case wh-movement has extracted the parallel wh-phrase which books out of both conjuncts C1 and C2. ATB extraction is the single exception to the CSC.

Link

Utrecht Lexicon of Linguistics

References

Williams, E. 1978. Discourse and Logical Form. Linguistic Inquiry 8-1, 101-139.