a type of behavior therapy in which people are taught appropriate methods of asserting themselves in various situations through honest and direct expression of both positive and negative feelings.
The Not-So-Nice Evolution Of The Word “Nice”Recently the phrase nice guy has been used to describe guys who are anything but nice by current standards. But, where did it come from?
Origin of assertiveness training
First recorded in 1970–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019