International Scholarly Research Notices

Research Article

Using the Contingent Grouping Method to Value Forest Attributes

Table 3

Model estimations.
Nonrandom parametersCoefficient -statistic
Picnic0.2381.924
Drive −0.626−4.965
Mushrooms−0.190−1.325
Erosion−0.075−2.633
SQ−1.972−5.812
SQ*Age13.4169.764
SQ*Age23.63711.129
SQ*Age34.11210.322
Random parameters: mean  
 CO20.2632.929
 Payment−0.117−5.663
Random parameters: spread  
 CO23.436 × 10−43.380
 Payment1.016 × 10−43.602
Observations732 
log-likelihood−628.105 
log-likelihood at 0−821.4110 
The model was estimated using the Halton sequences with 500 replications. In the results reported in this paper, the variables CO2 and Erosion were divided by 105 and 102, respectively, to facilitate estimation.