Supplemental Material for Psychological Methods Web Site
LISREL Syntax for the CFA Model
ti MZ Males Double-entry CFA
da ni=8 no=137!8 input variables and 137 cases
km!Correlation matrix (lower triangle)
1.000
.358 1.000
.335 .431 1.000
.461 .404 .318 1.000
.407 .231 .130 .219 1.000
.231 .444 .171 .196 .358 1.000
.130 .171 .092 .114 .335 .431 1.000
.219 .196 .114 .355 .461 .404 .318 1.000
me!Sample Means
3.058 2.523 2.908 3.119 3.058 2.523 2.908 3.119
Sd!Sample Standard deviations
.622 .618 .611 .674 .622 .618 .611 .674
la!Labels for the observed variables
reapp1 foresgt1 insight1 selfdir1
reapp2 foresgt2 insight2 selfdir2
!Lisrel Model command, 8 observed variables(nx), 2 factors (nk)
!Free factor variance-covariances matrix (ph)
!Allow specification of error variances and covariances (td)
!Fix factor means at zero (ka)
!Free indicator intercepts (tx)
mo nx=8 nk=2 ph=fr td=sy,fi, ka=fi tx=fr
lk!Labels for the latent variables
factor1 factor2
va 1 lx(4,1) lx(8,2)!Set latent variable scaling indicators
fr lx(1,1) lx(2,1)!Free designated factor loadings
fr lx(3,1) lx(5,2)!
fr lx(6,2) lx(7,2)!
fr td(1,1) td(2,2)!Free designated error variances
fr td(3,3) td(4,4)!
fr td(5,5) td(6,6)!
fr td(7,7) td(8,8)!
fr td(5,1) td(6,2)!Free designated error covariances
fr td(7,3) td(8,4)!
eq lx(5,2) lx(1,1)!Equate corresponding factor loadings
eq lx(6,2) lx(2,1)!
eq lx(7,2) lx(3,1)!
eq td(5,5) td(1,1)!Equate corresponding error variances
eq td(6,6) td(2,2)!
eq td(7,7) td(3,3)!
eq td(8,8) td(4,4)!
eq ph(1,1) ph(2,2)!Equate corresponding factor variances
eq tx(5) tx(1)!Equate corresponding item intercepts
eq tx(6) tx(2)!
eq tx(7) tx(3)!
eq tx(8) tx(4)!
ou nd=3 !Lisrel output command
Lisrel Syntax for the I-SAT Model
ti MZ Males Double-entry I-SAT
. . .
!Lisrel Model command, 8 observed variables (nx)
!8 factors (nk) with Identity matrix for factor loadings (lx)
!but factor variances and covariances zeroed out (ph)
!and item residual covariance matrix freely estimated (td)
!Item intercepts freely estimated (tx)
mo nx=8 nk=8 lx=id ph=ze tx=fr td=sy,fr
eq td(1,1) td(5,5)!(a) Equate corresponding item variances
eq td(2,2) td(6,6)!(b)
eq td(3,3) td(7,7)!(c)
eq td(4,4) td(8,8)!(d)
eq td(2,1) td(6,5)!(e)
eq td(3,1) td(7,5)!(f) Equate intra-partner covariances
eq td(4,1) td(8,5)!(g)
eq td(3,2) td(7,6)!(h)
eq td(4,2) td(8,6)!(i)
eq td(4,3) td(8,7)!(j)
eq td(6,1) td(5,2)!(p) Equate inter-partner covariances
eq td(7,1) td(5,3)!(q)
eq td(8,1) td(5,4)!(r)
eq td(7,2) td(6,3)!(s)
eq td(8,2) td(6,4)!(t)
eq td(8,3) td(7,4)!(u)
eq tx(5) tx(1)!(v)Equate corresponding item intercepts
eq tx(6) tx(2)!(w)
eq tx(7) tx(3)!(x)
eq tx(8) tx(4)!(y)
ou nd=3
Lisrel Syntax for I-NULL Model
ti MZ Males Double-entry I-null
. . .
mo nx=8 nk=8 lx=id ph=ze tx=fr td=di
eq td(5,5) td(1,1)!(a) Equate corresponding item variances
eq td(6,6) td(2,2)!(b)
eq td(7,7) td(3,3)!(c)
eq td(8,8) td(4,4)!(d)
eq tx(5) tx(1)!(v) Equate corresponding item intercepts
eq tx(6) tx(2)!(w)
eq tx(7) tx(3)!(x)
eq tx(8) tx(4)!(y)
ou nd=3