=1 if assigned to job training
age in 1977
years of education
=1 if black
=1 if Hispanic
=1 if married
=1 if no high school degree
# mnths prior to 1/78 in expmnt
real earns., 1974, $1000s
real earns., 1975, $1000s
real earns., 1978, $1000s
=1 if unem. all of 1974
=1 if unem. all of 1975
=1 if unem. all of 1978
log(re74); zero if re74 == 0
log(re75); zero if re75 == 0
log(re78); zero if re78 == 0
age^2
months in training