title:
  Data from table 2.1, page 20.
  Input 2.3, page 30.
  Output bottom page 30, top of page 31.
data:  
  file is ch2.dat;
  format is free;
  type is correlation means stdeviations;
  nobservations = 343;
variable:  
  names are y1 y2 y3; 
  usevar =  y1-y3;
analysis:
  type = general meanstructure;          
model: 
  slope by y1@1 y2* y3*; ! footnote 1.
  slope;     ! Estimate slope variance
  [slope];   ! Estimate slope mean
  [y1@0 y2@0 y3@0]; ! make residual variances 0
  y1 y2 y3 (eqerr); ! footnote 2.
! Footnotes
! 1. the y2* y3* frees the factor loadings for 
!    time2 and time3.
! 2. this constrains the residual variances for
!    y1 y2 and y3 to be equal.