When attention is turned to contractionary periods, the results are somewhat less robust against the specification variations that are investigated.
Worthwhile results obtained from this framework must be robust enough to be independent of small numerical differences, which may be without real significance.
If the structuralists are correct, then we would expect to see high degrees of significance and robust negative coefficients on this measure.
The technique appears to be reasonably robust to both of these effects.
The model was reasonably robust to all other changes.
Robust estimation of population size when capture probabilities vary among animals.
These constraints placed on the data should make the results more robust.
Within such constraints, the precise parameter values are not critical: the qualitative effects are robust within a range of parameter values.
