. Author manuscript; available in PMC: 2018 Jan 22.

Published in final edited form as: J Econ Behav Organ. 2014 Nov 25;109:120–134. doi: 10.1016/j.jebo.2014.11.009

Table 2.

Externalities and payoff consequences

Treatment	Δc_l		Δc_h		Payoffs π_l, π_l, π_h [∑ π_j] given contributions of c_l, c_l, c_h
Treatment	$Δ π_{l}^{P G}$	$Δ π_{h}^{P G}$	$Δ π_{l}^{P G}$	$Δ π_{h}^{P G}$	0,0,0	20,20,20	0,0,20	20,0,0
Base	0.5	-	-	-	20,20,20 [60]	30,30,30 [90]	30,30,10 [70]	10,30,30 [70]

Val	0.5	1.5	0.5	1.5	20,20,20 [60]	30,30,90 [150]	30,30,30 [90]	10,30,50 [90]

Cap	0.5	0.5	1.5	1.5	20,20,20 [60]	50,50,50 [150]	50,50,30 [130]	10,30,30 [70]