To correctly produce words, speakers must have access to three broad c
lasses of information: lexical semantics, syntax and sound structure.
The relevant information must be organized in ways that permit rapid a
nd accurate retrieval of specific lexical targets. Current models of l
anguage production do this by a two-stage process: The first stage inc
orporates lexical meanings and syntax, and the second, sound structure
. We used studies of the tip-of-the-tongue phenomenon (i.e., the condi
tion ill which a speaker cannot produce a well-known word) to evaluate
this organization, and in so doing, we provide the first clear experi
mental evidence for a lexical stage that includes syntax and is distin
ct from both sound structure and the conceptual correlates of syntacti
c features.