Returns the marginal effects of a SpatialProbit model.
Usage
effects(object)
Arguments
object
an object of class SpatialProbit.
Value
It returns the marginal effects of the estimated
SpatialProbit model.
Details
The effects function has different outputs according to the
DGP of the SpatialProbit model:
"SAR"
The marginal effects of a spatial autoregressive
model are more complicated than usual measurements of impacts for non
spatial models. Here we follow LeSage and Pace and propose the following
summaries for impact measures:
Average direct effects:
the average over all the observations of
the effects of the change of an explanatory variable of a single
observation on the choice probability of that same observation.
Average indirect effects:
the average over all the observations
of the effect of a change on a explanatory variable on the choice
probability of the neighbouring observations.
Average total effects:
the sum of direct and indirect impacts.
"SEM"
marginal effects should be interpreted as if it were a
standard probit model.
References
J. LeSage and R.K. Pace. Introduction to Spatial Econometrics, CRC
Press, chapter 10.1.6, 2009.