Table 1 Intervention elements and supporting literature

Stage 0

Ground rules of respectful dialogue

Equal status contact²⁴

Supportive social norms²⁴

Equality-based respect⁶²

Intergroup dialogue^56,57

Stage 1

Personal acquaintance task (“Fast Friends”)

Acquaintance potential²⁶

Decategorization^45,46

Cross-group friendship^27,29

Self-disclosure^27,28

Interpersonal closeness⁶⁵

Stage 2

Respectful intergroup dialogue

Salient categorization⁴⁷

Intergroup dialogue^56,57

Perspective-giving^58,59

Conversational receptiveness^63,64

Stage 3

Cooperative contact toward a superordinate goal

Cooperation toward a common goal²⁴

Recategorization⁴⁸