title:
  Data from table 4.1, page 54.
  Input from Appendix 4.2 page 154.
  Figure 4.2 page 58.
  Output bottom of page 59, top of page 60, and table 4.4 page 59.
data:  
  file is ch4.dat;
  format is free;
  type is means covariance;
  ngroups = 2;
  nobservations = 196 95;
variable:  
  names are v1 v2 v3; 
analysis: 
  type = general meanstructure ;
model:
  inter slope | v1@0 v2@1 v3@2;
  [inter] (1);
  [slope] (2);
  inter   (3);
  slope   (4);
  v1      (5);
  v2      (6);
  v3      (7);
  inter with slope (8);
  addgrow by v1@0 v2@1 v3@2;    ! added growth factor
  [addgrow@0];                  ! mean is 0
  addgrow@0;                    ! variance is 0     
  addgrow with inter@0 slope@0; ! addgrow uncorrelated with inter and slope
Model g2:
  [addgrow];                 ! mean is estimated
  addgrow;                   ! variance is estimated