
What are errors & how should we deal with them in our classes?
– Scott Thornbury
When I first started teaching the answer to these two questions was clear and unproblematic. What are errors? They are any departure from standard English. How should we deal with them? We should correct them lest they become ‘bad habits’.
Subsequently, these two questions have become the most difficult, problematic and mysterious of all questions related to language teaching.
What are errors? We simply don’t know any more. Why? Because there is no agreed upon standard by which to measure learners’ output. For a start, there are so many varieties of native speaker English (both spoken and written) that it’s impossible to decide if a sentence like ‘I can’t get no satisfaction’ is ‘wrong’ or not. On top of that, many learners are not interested in speaking ‘native speaker’ English anyway.
What should we do about errors? Research suggests that correcting errors has only an accidental effect on accuracy, and that many so-called errors (like failure to add –s to present simple third person singular verbs, as in she work) are an inevitable stage of language learning, and are extremely resistant to correction. On the other hand, if we don’t correct errors we may send out a message that accuracy doesn’t matter, which may threaten the long-term language development of our learners. Also, we need to be aware that excessive correction can be very de-motivating for many learners, while not to correct errors will make us look incompetent in the eyes of other learners.
In short, errors, and the way we handle them, are an enormous puzzle, and I would be fascinated to know how you deal with this puzzle yourself.

 
	

 What are language errors? Well, the definition may be a bit blurry just as it may be a bit technical, but we can say they’re often mistakes people make, things that deviate from standard grammar.
What are language errors? Well, the definition may be a bit blurry just as it may be a bit technical, but we can say they’re often mistakes people make, things that deviate from standard grammar. What is an error, when we’re talking about language learning? According to Paul Lennon (1991) “a linguistic form or combination of forms which in the same context and under similar conditions of production would, in all likelihood, not be produced by the speakers’ native speakers counterparts”. Penny Ur (1991) differentiates errors (consistent and based on a mis-learned generalization) and mistakes (occasional, inconsistent slips) while Jeremy Harmer (2007) differentiates slips (mistakes students can correct themselves once they’ve been pointed out), errors (mistakes they can’t correct themselves and therefore need an explanation) and attempts (when they try to say something but don’t know the correct way yet). Being realistic, teaching as many classes as most ELT teachers do, with as many students, it seems hard to be able to differentiate. Maybe we can notice when it’s an unusual mistake for this or that student – hence a slip. But in my experience, most language teachers (and I include myself in that!) will react and correct any accuracy mistake. Sometimes we’ll take it easier at oral production – not to stop the flow – but most of us are merciless when it comes to writing.
 What is an error, when we’re talking about language learning? According to Paul Lennon (1991) “a linguistic form or combination of forms which in the same context and under similar conditions of production would, in all likelihood, not be produced by the speakers’ native speakers counterparts”. Penny Ur (1991) differentiates errors (consistent and based on a mis-learned generalization) and mistakes (occasional, inconsistent slips) while Jeremy Harmer (2007) differentiates slips (mistakes students can correct themselves once they’ve been pointed out), errors (mistakes they can’t correct themselves and therefore need an explanation) and attempts (when they try to say something but don’t know the correct way yet). Being realistic, teaching as many classes as most ELT teachers do, with as many students, it seems hard to be able to differentiate. Maybe we can notice when it’s an unusual mistake for this or that student – hence a slip. But in my experience, most language teachers (and I include myself in that!) will react and correct any accuracy mistake. Sometimes we’ll take it easier at oral production – not to stop the flow – but most of us are merciless when it comes to writing.