Table 6. Pooled random effects Tobit estimation of individual extraction (standard error in parentheses)

Variable Model 3 -
limited open access & regulation
Model 4 -
limited open access & regulation
Constant (default is open access) 9.1***
(1.95)
5.33***
(2.05)
Dummy regulation -4.23***
(0.26)
3.32**
(1.39)
Age (years) -0.17**
(0.07)
-0.03
(0.08)
Age squared 0.001*
(0.0008)
0.0004
(0.0009)
Age (years) x Dummy regulation -0.27***
(0.06)
Age squared x Dummy regulation 0.002***
(0.0007)
Education (years of formal schooling) -0.05
(0.09)
-0.05
(0.08)
Male 0.72
(0.58)
0.69
(0.58)
Fishers’ organization -0.06
(0.53)
-0.06
(0.53)
Community organization 0.17
(0.40)
0.17
(0.40)
Number of days fishing per week -0.14
(0.12)
-0.13
(0.12)
Agreement 0.16
(0.34)
0.15
(0.34)
Knowledge of seasonal restriction -0.24
(0.39)
0.21
(0.42)
Knowledge of seasonal restrictions x Dummy regulation -0.92***
(0.31)
Dummy Session 2 0.97
(0.84)
0.97
(0.84)
Dummy Session 3 1.25
(0.76)
1.25*
(0.76)
Round 0.07***
(0.02)
0.07**
(0.03)
Round x Regulation 0.02
(0.04)
Fixed effects by groups (not reported) 14 14
Rho 0.13 0.14
Prob > χ2 0.00 0.00
N 1436 1436
Note: The dependent variable is the individual’s harvest (1–9), inclusive. For regulation, we do not include participants in the round in which they were forced to extract one unit.
*** denotes p <0.01; ** denotes p <0.05; * denotes p <0.10