Some days ago I stumbled across a rather interesting document on the ielts.org website: https://www.ielts.org/pdf/Volume%206,%20Report%203.pdf. The title is "3. Candidate discourse in the revised IELTS Speaking Test" by Annie Brown. This essay mentions some interesting metrics extracted from recorded speaking tests. These metrics were cross-referenced against the band that the test taker was given. I would like to know from you if you agree with them.
- 1. Total number of words: the research consisted of counting the total number of words the test taker spoke throughout the full speaking test and removed repetition, false starts, etc, and they got the following figures:
Band 5: average 0657 words
Band 6: average 1007 words
Band 7: average 1034 words
Band 8: average 1227 words
- 2. Proportion of error-free utterances. (these being tense, noun-verb agreement, singular/plural, article, preposition, pronoun choice and comparative formation.)
Band 5: average 1.35
Band 6: average 1.44
Band 7: average 3.00
Band 8: average 6.41
Thanks in advance.