Grid-group cultural theory and behaviour in a public good experiment

Figures & data

Table 1. Contributions.

	Contributions
Part 1/Low-Grid/High-Group	4.44**
	(1.98)
Part 1/High-Grid/Low-Group	1.32
	(2.17)
Part 1/High-Grid/High-Group	2.45
	(2.56)
Part 2/Low-Grid/Low-Group	2.26***
	(0.761)
Part 2/Low-Grid/High-Group	6.18***
	(2.16)
Part 2/High-Grid/Low-Group	−1.07
	(2.44)
Part 2/High-Grid/High-Group	6.03**
	(2.68)
Constant	8.65***
	(1.76)
N	1215
R^2	0.12

Individual random effects with errors clustered at group level.

*p < 0.10, **p < 0.05, ***p < 0.01.

Table 2. Grid-group effects.

	Low-Grid	High-Grid	Diff.	Low-Group	High-Group	Diff.
Cont. Part 1	11.91***	10.80***	−1.11	9.03***	12.52***	3.48**
	(0.842)	(1.60)	(1.73)	(1.31)	(0.935)	(1.56)
Cont. Part 2	13.79***	12.79***	−1.00	9.95***	14.79***	4.83***
	(1.28)	(1.91)	(1.82)	(1.38)	(1.45)	(1.64)
Prob. Monitor	0.141***	0.271***	0.129***	0.155***	0.184***	0.029
	(0.039)	(0.028)	(0.045)	(0.039)	(0.032)	(0.035)
Prob. Punish	0.541***	0.758***	0.217***	0.698***	0.579***	−0.119
	(0.063)	(0.049)	(0.064)	(0.066)	(0.067)	(0.098)
Punishment	1.87***	3.17***	1.30**	2.76***	2.11***	−0.648
	(0.249)	(0.560)	(0.621)	(0.586)	(0.222)	(0.592)

Figures represent predicted averages within designation, standard errors in parenthesis.

*p < 0.10, **p < 0.05, ***p < 0.01.

Table 3. Monitoring and punishment.

	Prob. Monitor	Prob. Punish	Punishment
Period	−0.073***	−0.014	0.028
	(0.015)	(0.015)	(0.039)
Contribution	0.063*	0.067***	0.134***
	(0.033)	(0.016)	(0.029)
Sum of Contributions	−0.011	−0.024***	−0.056***
	(0.01)	(0.009)	(0.014)
Low-Grid/High-Group	0.369*	−0.369	0.024
	(0.215)	(0.370)	(0.659)
High-Grid/Low-Group	1.02***	0.908	2.89*
	(0.302)	(0.665)	(1.648)
High-Grid/High-Group	0.845***	0.349	0.781
	(0.298)	(0.418)	(0.571)
Constant	−0.564	1.05**	2.65***
	(0.44)	(0.44)	(0.581)
N	810	406	406
X^2	34.86	106.04	35.70

Individual random effects with errors clustered at group level.

*p < 0.10, **p < 0.05, ***p < 0.01.

Table

Group Member	Endow.	Alloc.	Private Acct. Earnings	Total EDs in Group Acct.	Group Acct. Earnings	Stage 1 Earnings
			1. (20–Alloc.)	2. (10+5+15+20=50)	3. (0.5*Total)	4. ((1.)+(3.))
You	20	10	10	50	25	35
Member A	20	5	15	50	25	40
Member B	20	15	5	50	25	30
Member C	20	20	0	50	25	25

Table

Group Member	Endow.	Alloc.	Private Acct. Earnings	Total EDs in Group Acct.	Group Acct. Earnings	Stage 1 Earnings
You	20	0	20	40	20	40
Member A	20	5	15	40	20	35
Member B	20	15	5	40	20	25
Member C	20	20	0	40	20	20

Table

Group Member	Endow.	Alloc.	Private Acct. Earnings	Total EDs in Group Acct.	Group Acct. Earnings	Stage 1 Earnings
You	20	20
Member A	20	5
Member B	20	15
Member C	20	20

Table

Number of group members who decide to observe individual allocations	Total Monitoring Costs (EDs)	Individual Monitoring Costs (EDs)
1	4	4.00
2	4	2.00
3	4	1.33
4	4	1.00

Table

Group Member	Reduction Points Imposed	Reduction Points Received
You	1 RP on Member C	0 RPs
Member A	2 RPs on Member C	1 RP from Member B 1 RP from Member C
Member B	2 RPs on Member C 1 RP on Member A	1 RP from Member C
Member C	1 RP on Member A 1 RP on Member B	1 RP from you 2 RPs from Member A 2 RPs from Member B