LINEAR GROWTH MODEL WITH MEAN STRUCTURE--Hands-on Exercise OBSERVED VARIABLES ALC12 ALC14 ALC16 ALC18 CORRELATION MATRIX 1.000 0.725 1.000 0.595 0.705 1.000 0.566 0.624 0.706 1.000 STANDARD DEVIATIONS 1.260 1.334 1.440 1.376 MEANS 1.338 1.591 2.019 2.364