<p>Abstract: This paper is based on a qualitative investigation concerning the effect of errors on the intelligibility of learner texts and whether there are some errors that can be considered graver than others. The investigation was based on five student texts that were collected at an upper secondary school in the Swedish province of Värmland. The texts were sent to five native speaker evaluators in Britain and the United States of America. The errors represented were categorized as followed: substance, grammar, word choice, transfer errors and other errors.The results indicate that errors concerning substance, word choice, other errors and grammar were not considered grave. Concerning the grammatical errors, there were only a small number of cases that were considered grave. Therefore, the conclusion was drawn that grammatical errors do not affect the intelligibility of any of the five texts. However, the results from the investigation show that transfer errors, i.e. when the writer has transferred characteristics from the first language to the target language, were considered affecting the intelligibility to a larger extent than errors belonging to the other categories.</p>

Abstract: This paper is based on a qualitative investigation concerning the effect of errors on the intelligibility of learner texts and whether there are some errors that can be considered graver than others. The investigation was based on five student texts that were collected at an upper secondary school in the Swedish province of Värmland. The texts were sent to five native speaker evaluators in Britain and the United States of America. The errors represented were categorized as followed: substance, grammar, word choice, transfer errors and other errors.The results indicate that errors concerning substance, word choice, other errors and grammar were not considered grave. Concerning the grammatical errors, there were only a small number of cases that were considered grave. Therefore, the conclusion was drawn that grammatical errors do not affect the intelligibility of any of the five texts. However, the results from the investigation show that transfer errors, i.e. when the writer has transferred characteristics from the first language to the target language, were considered affecting the intelligibility to a larger extent than errors belonging to the other categories.