Create a test PSID dataset
makes artifical PSID data with variables age
and income
for two consecutive years 1985 and 1986.
testPSID(N = 100, N.attr = 0)
N
: number of people in each waveN.attr
: number of people lost to attritionlist with (fake) individual index file IND2009ER and family files for 1985 and 1986