Dear all,
I am trying to calculate corrected standard errors
after an estimation of two-step Heckman model with two corrections for non
random selection.
I have found a reference in Tunali 1986 “A
general structure for models of double selection …” published in Research
in Labor economics by Ehrenberg.
Is there anyone who has been working on this issue?
Thanks in advance
Silvia Magri
Research Department
Banca d'Italia
Via Nazionale 91 - Roma
e-mail: [email protected]
phone: 0039 06 4792-4377
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