TITLE:
Eq 10a.2: Fixed Quadratic, Random Linear Model using Years since Birth
Controlling for Birth Cohort
DATA:
FILE = MPLUS_Chapter10a.csv;
FORMAT = FREE;
DEFINE:
tvagesq = tvage84*tvage84;
ageT0sq = ageT084*ageT084;
VARIABLE:
NAMES = PersonID occasion ageT0 tvage ytdT0 tvytd recall time
roundage tvage84 ageT084 roundytd tvytd7 ytdT07;
USEVARIABLES = recall tvage84 ageT084 tvagesq ageT0sq;
MISSING = ALL (-9999);
CLUSTER = PersonID;
WITHIN = tvage84 tvagesq;
BETWEEN = ageT084 ageT0sq;
ANALYSIS:
ESTIMATOR = ML;
PROCESSORS = 4;
TYPE = TWOLEVEL RANDOM;
MODEL:
%WITHIN%
recall;
linear | recall ON tvage84;
quad | recall ON tvagesq;
%BETWEEN%
[recall linear quad] (int btvage84 btvagesq);
recall linear quad@0;
recall WITH linear;
recall ON ageT084 ageT0sq (baint basqint);
linear ON ageT084 (balin);
MODEL TEST:
0=baint;
0=basqint;
0=balin;
MODEL CONSTRAINT:
NEW(est1-est6);
est1 = baint*1;
est2 = basqint*1;
est3 = balin*1;
est4 = baint*1 + btvage84*1;
est5 = basqint*1 + balin*1 + btvagesq*1;
est6 = balin*1 + btvagesq*2;