Irina Murtazashvili, "An Alternative Measure of Intergenerational Income
Mobility Based on a Random Coefficient Model", Journal of Applied
Econometrics, Vol. 27, No. 7, 2012, pp. 1161-1173.

The data used in the article are from the Panel Study of Income Dynamics 
(PSID). We employ two samples: (1) a sample of fathers and their oldest 
sons; and (2) a sample of fathers and all of their sons (multiple sons).

The sample of fathers taken from 1968 contains 311 male heads of 
household aged between 29 and 69 who had at least one biological or 
adoptive son. The survey from 1968 contains information on fathers' 
earnings in 1967. This sample is obtained from the Survey Research 
Center (SRC) component of the PSID.

The sons in the oldest sons sample are oldest sons from the original 
1968 PSID households who reported positive annual earnings for 1984. The 
data on the annual earnings of sons in 1984 come from the 1985 survey. 
Sons are restricted to those who were born between 1951 and 1959 and who 
were heads of households in 1985. The multiple sons sample contains 404 
multiple sons (either biological or adoptive) of the fathers from 1968 
who met all the requirements mentioned above (except that of being 
oldest sons).

The data file contains the following columns:		
				
id  	      Family identifier
inc85s	      Son's earnings in 1984 (Reported in 1985)
inc68f	      Father's Earnings in 1967 (Reported in 1968)
educ68f	      Father's Education
oldest_son    Dummy Variable Indicating Whether a Son is the Oldest Son
	      in a Family
inc68f_85     Father's Earnings in 1967 Measured in 1984 Dollars
ln85s	      ln(inc85s)
ln68f	      ln(inc68f_85)

The data are provided as a comma-separated-variables (CSV) file called 
iim.csv. It has 405 rows and is an ASCII file in DOS format. It is 
zipped in the file iim-data.zip. Unix/Linux users should use "unzip -a".

There is also an on-line appendix in the file Murtazashvili-appendix.pdf.