In the first experiment, it was found that in Korean the duration of a consonant has a systematic relationship with the duration of the adjacent vowel. However, there is no indication that a syllable boundary affects the degree of influence on the durations of preceding or following vowels, which suggests that the syllable is not the unit of time programming in Korean. In the second experiment, it was argued that all the statistical results used to support the contention that individual segments are not the time programming units, are also compatible with the traditional view that segments are the units of time programming.