Cleaned data, cleaning code and analysis code for 'Feedback timing affects L2+ perceptual vowel acquisition'

This dataset uses 4.3.1 and the analysis code requires use of the groundhog package (Simonsohn & Gruson, 2021) to aid reproducibility.本数据集采用4.3.1版本，其配套分析代码需使用groundhog包（Simonsohn与Gruson，2021）以保障研究可复现性。