Preliminary results of the percentages of correct word identification for the CF and I‐accented English words, in addition to the longer reaction times of the CF‐accented English words, confirm that both incorrect stress and vowel reduction interfere with L2 intelligibility. Results show that both rightward and leftward misplacement of stress impair intelligibility, but intelligibility seems to be more impaired by leftward misplacement. As for vowel reduction, its misplacing has a greater negative effect on intelligibility than its omission. In addition to the questions sought, results from CF data also suggest that even though misplacement word stress is damaging to intelligibility, it is incorrect vowel reduction that is more detrimental. Hence, one might conclude that word stress and vowel reduction should be an area of concern for pronunciation teachers.