The transcript on page 16 is of the oral narrative that Jean produced after he had been given the chance to write it out. The transcript below is of
another oral narrative which Jean produced, this time with no
prior opportunity to plan. A comparison of how Jean marks verbs requiring past tense in the two narratives is revealing. First, it is clear that overall Jean uses a higher proportion of irregular verbs like 'saw' and 'went' in the unplanned narrative than in the planned one. Second, Jean is much more likely to mark verbs correctly for past tense in the planned than in the unplanned narrative.
This is true for both regular and irregular verbs but especially so for the latter. In fact, in the unplanned narrative he fails to mark a single regular verb for past tense. It is clear that Jean's use of the past tense is strongly influenced by the availability of planing time. He is more likely to use target-language forms when he has time to plan.