I am looking for literature that investigates the question how the textual description of a task influences task performance. This can be in any domain such as learning task or work task description. 

It seems obvious that there must be a huge corpus of research on it. Yet it seems I am unaware of the appropriate search terms. 

Links to common literature on this topic as well as ideas for terms to search on google scholar would be great. 

Thanks in advance,

 Markus