The present study investigates the time course of acoustic cue integration in the processing of the Korean three-way laryngeal stop contrast by native Korean listeners and English second language (L2) learners of Korean. As such, this study seeks to understand how native listeners and L2 learners weight and integrate fine-grained acoustic information in spoken word recognition. Specifically, this study investigates three important issues in speech perception and spoken word recognition. The first issue is that acoustic information from different cues often arrives asynchronously as the speech signal unfolds, thus raising the question of how asynchronous acoustic cues are integrated over time. A second critical question is whether the cue integration strategy used in the native language (L1) determines the cue integration strategy adopted in the L2. A third important issue is that of individual differences in cue weighting and cue integration strategies and what might be the potential source of such variabilities. From these issues, three research questions arise: (1) Are acoustic cues integrated continuously when the weight of the cue available later is greater than that of the cue available earlier? (2) Do listeners' cue weighting and cue integration strategies in the L1 affect how they weight and integrate acoustic cues that signal a similar phonological contrast in the L2? And (3) does an individual's cue weighting predict their cue integration strategy, and are both predicted by working memory capacity? This study addresses these questions by determining: (a) how individual native Korean listeners weight and integrate VOT (cue available early in the speech signal) and onset F0 of the following vowel (cue available later) when hearing Korean isolated words that begin with a stop; (b) how individual English L2 learners of Korean weight and integrate the VOT and onset F0 of the following vowel when hearing Korean isolated words that begin with a laryngeal stop; and (c) whether listeners' cue weighting and cue integration are related to listeners' working memory capacity. A cue-weighting speech perception experiment measured listeners' perceptual reliance on acoustic cues to the Korean stop contrast. During the cue-weighting task, participants heard a stimulus that was part of a matrix consisting of seven steps of VOT and seven steps of F0 and identified what they heard from two given alternatives. The results of the cue-weighting task showed that Korean listeners use F0 as the primary cue and VOT as the secondary cue for perceiving the aspirated vs. lenis and the lenis vs. fortis contrasts, but they use VOT as the primary cue for perceiving the aspirated vs. fortis contrast. English L2 learners of Korean were found to transfer their relative cue weighting from their L1 English stop voicing contrast to the processing of the L2 Korean laryngeal stop contrast, relying primarily on VOT to perceive the Korean contrasts. Individual listeners' perceptual reliance on acoustic information was quantified by their responses to the cue-weighting task, serving as a foundation for predicting the real-time processing of acoustic information, which was measured with an eye-tracking experiment. The visual-world eye-tracking paradigm measured listeners' timing of VOT integration in the real-time processing of acoustic information in lexical access. In the eye-tracking experiment, listeners saw a display with four printed Korean words: one target, one competitor, and two distractors. Participants' eye movements were recorded as they heard a target word within the carrier sentence and clicked on the corresponding word. The results showed that, at the group level, Korean listeners' timing of VOT integration was delayed in the condition with an aspirated target and a lenis competitor and in the condition with a lenis target and a fortis competitor, in which F0 (cue available later in the speech signal) is the primary cue for perceiving the corresponding contrasts. These results suggest that the timing of cue integration is associated with the relative weighting of acoustic cues. English L2 learners of Korean showed that their timing of VOT integration was not delayed except for the condition with a lenis target and a fortis competitor, where they had difficulties identifying target stops. This suggests that their transferred relative cue weighting from the L1 is associated with their real-time processing of acoustic information in the L2.At the individual level, Korean listeners who relied more on F0 showed more delayed timing of VOT integration, further elucidating the relationship between cue weighting and the time course of cue integration. English L2 learners of Korean did not show a significant relationship between the two variables. The effect of working memory was overall not strong, although it predicted the perception of some contrasts. The present results speak to the literature on the mechanisms that underlie the time course of cue integration as the speech signal unfolds and suggest that listeners' real-time processing of asynchronous acoustic information in lexical activation is modulated by the informativeness of perceptual cues. As such, this study provides a nuanced perspective for a better understanding of listeners' moment-by-moment process of acoustic information in spoken word recognition. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]