Schachter, J. 1974. An error in error analysis. CA sometimes predicts difficulties that do not occur. Error analysis will reveal the difficulties learners are experiencing.
More frequent errors indicate greater difficulty.
Chinese and Japanese learners will have difficulty with position. Japanese learners will have difficulty with arbitrary and pronominal markers. Chinese, Arabic, and Farsi learners will have difficulty with pronominal markers only. Chinese and Japanese learners used fewer RCFs because they are trying to avoid them. They only produce them when they are relatively sure they are correct.