Key points are not available for this paper at this time.
This paper reports on a young Korean boy's target-like and non-target-like uses of the Korean negation marker ani to express various types of negation in Korean, observed approximately between the ages of 2;2 and 2;5. Besides the target-like usage of ani as a sentential adverb for a 'no' response, he used ani in place of Korean short-form negation markers an and mos, non-existential predicate epsta, and prohibitive predicate malta. Discussions regarding why the duration of his extended use of ani differed between the non-target-like uses and his placement of the negation marker are provided. Overall, such extended use of ani may have been a deliberate and practical strategy for him to express various types of negation in Korean when he did not yet acquire or was not able to readily retrieve the appropriate negation markers.
Sang-Gu Kang (2024) studied this question.