Table 1.

Dependence of VOT on place of articulation in English in various earlier works.

English:
Age	k>t>p	k=t>p		k>t=p
1		(Eilers et al., 1984)
2	(Macken & Barton, 1980a) (Tyler & Saxman, 1991)(?)		(Zlatin & Koenigsknecht, 1976)
3		(Bailey & Haggard, 1980)
4	(Barton & Macken, 1980)
5
6			(Zlatin & Koenigsknecht, 1976)
7
Adult	(Lisker & Abramson, 1967) (Klatt, 1975) (Zue, 1976) (Weismer, 1979) (Nearey & Rochet, 1994)	(Crystal & House, 1988) (Docherty, 1989) (Cooper, 1991)
Other Languages:
1		Spanish (Eilers et al., 1984) Swiss-German (Enstrom, 1982)
2		Spanish (Macken & Barton, 1980b) Spanish (Deuchar & Clark, 1996)
3	Cantonese (Clumeck et al., 1981)		Thai (Gandour et al., 1986)
4			Spanish (Macken & Barton, 1980b)
5			Thai (Gandour et al., 1986)
6
7			Thai (Gandour et al., 1986)
Adult	French (Fischer-Jørgensen, 1972)		Thai (Gandour et al., 1986) French (Nearey & Rochet, 1994)

Note: Clumeck et al (1981) did not test this aspect of their data, so the ranking of the stop places is an estimate. The distinction between t and p is apparent with the aspirates, marginal with the inaspirates.