Table 4.

Mean (SD) lambda measures for tense and lax vowels and descriptive statistics for vowel duration, as a function of condition.

Measure	Gender	Habitual	Clear	Hearing impaired	Overenunciate
Tense lambda	F	288 (245)	308 (309)	333 (310)	335 (330)
	M	216 (178)	232 (201)	243 (199)	245 (206)
	All	253 (218)	271 (264)	289 (265)	291 (262)
Lax lambda	F	230 (153)	247 (170)	279 (188)	296 (269)
	M	229 (144)	225 (152)	238 (167)	251 (164)
	All	230 (149)	236 (162)	259 (179)	274 (225)
Tense vowel duration (ms)	All	116 (46)	136 (60)	152 (59)	169 (73)
Lax vowel duration (ms)	All	83 (33)	94 (40)	106 (46)	114 (46)