Assertiveness is used in 3 frameworks

ACT Holistic Framework

Influencing others and preferring to be in charge in social interactions and group activities

OECD

Able to confidently voice opinions, needs, and feelings, and exert social influence.

Clover Model

Assertiveness is about having agency and self-efficacy, the ability to negotiate one’s self in relation to others, and make decisions. All humans feel the need to affect the world around them. Assertiveness reminds us that young people need opportunities to develop their voices, make decisions for themselves, and master internal order and executive function.