TL;DR: This article conducted a meta-analysis of the last 25 years of L2 perception training studies that test for effects in production and found that strictly controlled perception training led to medium-sized improvements in perception and small improvements in production.
Abstract: Cognitive scientists across disciplines have shown a vested interest in examining if and how the speech perception and production modalities are connected. The field of second language (L2) acquisition contributes to this discussion by investigating the effects of auditory training of L2 sounds on pronunciation. This meta-analysis offers a comprehensive view of the last 25 years of L2 perception training studies that test for effects in production. The results indicate that the two modalities are connected, insomuch as training the perception of L2 sounds can induce positive change in the productive mode as well. The data indicate that strictly controlled perception training led to medium-sized improvements in perception (d = 0.92, SD = 0.96) and small improvements in production (d = 0.54, SD = 0.45). A correlation analysis suggests a small- to medium-sized relationship between perception and production gains, although this relationship was not significant. The production of obstruents improved to a larger degree than sonorants or vowels, and an additional six moderating variables influenced the magnitude of the production effect sizes. We caution researchers to not equate the connection of the two modalities in long-term linguistic development to real-time neurological processing, and we end with five recommendations for the domain of L2 phonetic training research.
TL;DR: In this paper, the authors investigate the effects that two different forms of hazard perception training (on road and classroom) have on the acquisition of hazardsperception skills and subsequent improvement in safety and general driving skills for a sample of new young drivers.
Abstract: The paper describes a study to investigate the effects that two different forms of hazard perception training (on road and classroom) have on the acquisition of hazard perception skills and the subsequent improvement in safety and general driving skills for a sample of new young drivers. A total of 220 recently qualified drivers (aged 17 to 25 years) were divided into four groups. Each group went through the same "testing" but different "training" procedures. The groups were assessed at the start of the study and one year later by completing a questionnaire, a 14 mile on-road assessment drive and a laboratory hazard perception test. The control group had no training between the assessments. Other groups had a two hour classroom course, the same course and two hours of on-road perception training, and the on-road perception training only eight to nine months after their first assessment. For the covering abstract, see IRRD 887275.
TL;DR: This article investigated whether native Hmong speakers' first language (L1) lexical tone experience facilitates or interferes with their perception of Mandarin tones and whether training is effective for perceptual learning of second (L2) tones.
Abstract: This study investigates whether native Hmong speakers' first language (L1) lexical tone experience facilitates or interferes with their perception of Mandarin tones and whether training is effective for perceptual learning of second (L2) tones. In Experiment 1, 3 groups of beginning level learners of Mandarin with different L1 prosodic background (Hmong, Japanese, and English) took a perception test on Mandarin tones. Both the English and Japanese groups outperformed the Hmong group in perceptual accuracy of Mandarin tones. In Experiment 2, 18 learners with different L1 background received either perception training only or perception with production training on Mandarin tones for 6 hours within 3-4 weeks. Both training paradigms were effective for perceptual learning of Mandarin tone contrasts as the two training groups' perceptual accuracy improved significantly at posttest compared with a control group. Although Hmong speakers initially had more difficulties in perception of Mandarin tones than the other 2 groups, they are by no means disadvantaged by their L1 prosodic background as they gain L2 experience after intensive training. [ABSTRACT FROM AUTHOR]
TL;DR: This paper investigated whether different types of corrective feedback in second language speech perception training have differential effects on second-language speech production and found that improvement in perception accuracy was a significant predictor of improvement in production accuracy.
Abstract: This study investigated whether different types of corrective feedback (CF) in second language speech perception training have differential effects on second language speech production. One hundred Korean learners of English were assigned to five different groups and participated in eight computer-assisted perception training sessions focusing on English vowels. While no CF was provided to the control group, participants in the four treatment groups received one of three types of auditory CF or a visual type of CF. A pretest, an immediate posttest, and a delayed posttest each consisted of a production measurement at a controlled-speech level. Results revealed that the extent to which the participants’ production accuracy benefited from the perception training depended on CF type. In addition, by adopting the perception accuracy data by Lee and Lyster (2016b), the current study found that improvement in perception accuracy was a significant predictor of improvement in production accuracy.
TL;DR: The results suggest that the employment of the motor system does not specifically benefit the tone perceptual skills and some tone pairs are more easily confused than others by native English listeners.