GLM PreHome PreWork PostHome PostWork BY Group
  /WSFACTOR=PrePost 2 Polynomial Location 2 Polynomial 
  /METHOD=SSTYPE(3)
  /PLOT=PROFILE(Group PrePost Location PrePost*Group PrePost*Location Group*Location 
    PrePost*Group*Location)
  /PRINT=DESCRIPTIVE ETASQ 
  /CRITERIA=ALPHA(.05)
  /WSDESIGN=PrePost Location PrePost*Location
  /DESIGN=Group.