Web-based L2 Syntactic Complexity Analyzer - Single Mode

The single mode of the web-based L2 Syntactical Complexity Analyzer takes up to 2 samples of English text and generates both numeric and graphical results of any or all 14 indices covering (1) length of production units, (2) amounts of coordination, (3) amounts of subordination, and (4) phrasal sophistication and overall sentence complexity. Please note that each text should have a maximum of 1000 words. If you have multiple files to be analyzed, please use the Batch Mode. By accessing and using the Lexical Complexity Analyzer, you are acknowledging that you agree to be legally bound and to abide by the L2SCA Terms of Service. Please cite:

  • Lu, Xiaofei (2010). Automatic analysis of syntactic complexity in second language writing. International Journal of Corpus Linguistics, 15(4):474-496.
  • Lu, Xiaofei (2011). A corpus-based evaluation of syntactic complexity measures as indices of college-level ESL writers's language development. TESOL Quarterly, 45(1):36-62.
  • Ai, Haiyang & Lu, Xiaofei (2013). A corpus-based comparison of syntactic complexity in NNS and NS university students' writing. In Ana Díaz-Negrillo, Nicolas Ballier, and Paul Thompson (eds.), Automatic Treatment and Analysis of Learner Corpus Data, pp. 249-264. Amsterdam/Philadelphia: John Benjamins.
  • Lu, Xiaofei & Ai, Haiyang. (2015). Syntactic complexity in college-level English writing: Differences among writers with diverse L1 backgrounds. Journal of Second Language Writing, 29, 16-27.

Step 1: Enter text #1

Step 2: Enter text #2 (Optional)

Step 3: Select measure(s)

Tip: Press CTRL or SHIFT to select multiple measures.