ADJ-GRADED 规定性的;指定的;规范的 A prescriptive approach to something involves telling people what they should do, rather than simply giving suggestions or describing what is done. 规定性的;指定的;规范的 [formal]
...prescriptive attitudes to language on the part of teachers.
对教师使用语言的规范性态度
The psychologists insist, however, that they are not being prescriptive.