Abstract

Mean length of utterance (MLU) is widely used in child language sample analysis as a way to quantify language development. The current study examines the split-half reliability of MLU and two alternative measures: MLU2 and median length of utterance (MdLU). The effects of utterance segmentation into phonological units (P-units) or communication units (C-units) on reliability were also studied. Sixty conversational child language samples were used which included ten children with language impairment. All measures were found to have high levels of split-half reliability, with MLU and MLU2 having higher levels of reliability than MdLU. There was no significant difference between MLU and MLU2. The differences in reliability when segmented into P-units or C-units were inconsistent. Overall, MLU and MLU2 are adequately reliable measures for clinical use.

Degree

MS

College and Department

David O. McKay School of Education; Communication Disorders

Rights

http://lib.byu.edu/about/copyright/

Date Submitted

2012-06-28

Document Type

Thesis

Handle

http://hdl.lib.byu.edu/1877/etd5389

Keywords

child language, MLU, MLU2

Share

COinS