Table II.

Schematic overview of the themes and sub-themes discovered through thematic analysis

Main theme	Sub-theme
Theme 1: What Matters to You?	1.1: A simple, universal question
	1.2: A familiar focus
Theme 2: Professional Responsibility	2.1: Counsellor’s responsibility vs. adolescent’s needs
	2.2: Closure or avoidance?
	2.3: Counsellor’s responsibility to stabilize in a crisis.
	2.4: The counsellor’s role: helping or directing?
	2.5: “Nothing matters to me.”
Theme 3: Empowering the Adolescent	3.1: Focus on the adolescents’ perspective—user involvement in practice
	3.2: Letting the adolescent take control
	3.3: Facilitating a stronger voice for the adolescent
	3.4: Creating responsibility
Theme 4: Practical Utility of Assert in Treatment	4.1: Defining tangible topics
	4.2: Creating a starting point for treatment
	4.3: Accessing the core of the adolescents’ difficulties
	4.4: Observing change motivates further change
	4.5: Facilitating continuity in treatment
	4.6: Creating structure
Theme 5: Implementation of Assert	5.1: Distribution of the workload
	5.2: Regular follow-up by the research team
	5.3: Something that we should do
	5.4: Sense of community
	5.5: The nature of the services
	5.6: Resistance towards using measures
	5.7: Assert feels different than traditional measurement paradigms
	5.8: A useful, evidence-based measure for the future