Returns the marginal effects of a SpatialProbit model.
an object of class SpatialProbit.
It returns the marginal effects of the estimated
The effects function has different outputs according to the
DGP of the SpatialProbit model:
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.
marginal effects should be interpreted as if it were a
standard probit model.
J. LeSage and R.K. Pace. Introduction to Spatial Econometrics, CRC
Press, chapter 10.1.6, 2009.