الخلاصة:
This study was carried out primarily to investigate collocational errors in 100 English written production of Third Year students at Mohammed Lamine Dabaghine University-Setif-2. It seeks to examine the lexical and grammatical collocational errors. An analytical-descriptive exploratory research design adopting a mixed method approach was followed. Also, two questionnaires were distributed to the students and 14 teachers of Written Expression, and a semi-structured interview with Third Year Written Expression teachers was conducted. To detect the errors, a particular reference was made to Taxonomy of Benson’s et al., (1986) modified version and Error Analysis Procedures. The statistical analysis revealed that a total of 396 errors were found in both lexical collocation (259: 65.40%) and grammatical collocation (137: 34.60%).