Table 5.

Causal configurations leading to SCA.

Conditions	Configurations
	1a	1b	2a	2b	3a	3b	3c
Virtual currency		∙	∙		*	*	*
Cash benefit	⊗		*	*	∙	∙
Social identity		⊗	*	*			*
Community reputation	⊗	⊗		*	*	*	*
Skill training	∙	⊗		*		⊗	*
Communication	*	*	*		*
Consistency	0.9481	0.9337	0.9481	0.9388	0.9405	0.8922	0.9422
Raw coverage	0.365	0.3178	0.6485	0.6197	0.6386	0.4249	0.6450
Unique coverage	0.0381	0.0027	0.0204	0.0158	0.0081	0.0136	0.0433
Overall solution consistence	0.8839
Overall solution coverage	0.8240

Black circles (∙) indicate the presence of a condition, and circles with x (⊗) indicate its absence. Circles with * mean core condition and circles without * mean peripheral condition. Black spaces mean “does not care” condition.