Working Paper Series
IFAU - Institute for Evaluation of Labour Market and Education Policy
Using internal replication to establish a treatment effect
Abstract: In many cases assignment to a treatment may affect
concomitant variables. I show how a concomitant variable can be used to
corroborate evidence from an observational study. In the observational
study two types of training programs are compared. One program is part of
regular Swedish labor market training while the other program was run by
Swedish industry during 1998-2000. A large and positive effect on
employment is found from this latter program. In this program it was much
easier to get employer contact than in the regular program. From a survey I
have information about employer contacts in the two programs. I find the
same positive effect on employment from employer contacts in either program
and no effects from the new program when conditioning on employer contacts.
I interpret this as a causal effect on employment from employer contacts.
In addition, this effect is found to be more pronounced for individuals
with a weak position in the labor market.
Keywords: Evaluation; active labor market training; information technology; employment rate; propensity score matching; internal replication; (follow links to similar papers)
JEL-Codes: C14; C52; J68; (follow links to similar papers)
31 pages, April 25, 2006
Before downloading any of the electronic versions below
you should read our statement on
for viewing Postscript files and the
Acrobat Reader for viewing and printing pdf files.
Full text versions of the paper:
Questions (including download problems) about the papers in this series should be directed to Monica Fällgren ()
Report other problems with accessing this service to Sune Karlsson ()
or Helena Lundin ().
Design by Joachim Ekebom