** Mx startup successful **
**MX-PC 1.52** Job started on 03/06/02 at 15:57:42
! Sibling Interaction Model
! CBC data in US twins
The following MX script lines were read for group 1
G1: MODEL PARAMETERS
CALC NGROUPS=3
BEGIN MATRICES;
X LOWER 1 1 FREE ! ADDITIVE GENETIC PATH
Y LOWER 1 1 FREE ! SHARED ENVIRONMENT PATH
Z LOWER 1 1 FREE ! NON-SHARED ENVIRONMENTAL PATH
B SYMM 2 2 ! SIBLING INTERACTION PARAMETER
I IDEN 2 2
H FULL 1 1
END MATRICES;
!Specify B 0 4 0 ! sibling interaction = 0
MATRIX H .5
BEGIN ALGEBRA;
A= X*X' ;
C= Y*Y' ;
E= Z*Z' ;
P= (I-B)~;
END ALGEBRA;
OPTIONS NO_OUTPUT
END
The following MX script lines were read for group 2
G2: MALE MZ TWINS IN LARGER FAMILIES
DATA NINPUT_VARS=2 NOBSERVATIONS=171
LABELS EXTER1 EXTER2
CMATRIX SYMMETRIC FILE=USCBCMZ.COV
MATRICES= GROUP 1
COVARIANCES (P* (A+C+E | A+C _
A+C | A+C+E) * P') /
OPTIONS RSIDUAL
END
The following MX script lines were read for group 3
G3: MALE DZ TWINS IN LARGER FAMILIES
DATA NINPUT_VARS=2 NOBSERVATIONS=194
LABELS EXTER1 EXTER2
CMATRIX SYMMETRIC FILE=USCBCDZ.COV
MATRICES= GROUP 1
COVARIANCES (P* (A+C+E | H@A+C _
H@A+C | A+C+E) * P') /
START .3 ALL
START .0 B 1 2 1
OPTIONS NDECIMALS=4
OPTIONS RSIDUAL
END
PARAMETER SPECIFICATIONS
GROUP NUMBER: 2
G2: Male MZ twins in larger families
MATRIX A
This is a computed FULL matrix of order 1 by 1
It has no free parameters specified
MATRIX B
This is a SYMMETRIC matrix of order 2 by 2
It has no free parameters specified
MATRIX C
This is a computed FULL matrix of order 1 by 1
It has no free parameters specified
MATRIX E
This is a computed FULL matrix of order 1 by 1
It has no free parameters specified
MATRIX H
This is a FULL matrix of order 1 by 1
It has no free parameters specified
MATRIX I
This is an IDENTITY matrix of order 2 by 2
MATRIX P
This is a computed FULL matrix of order 2 by 2
It has no free parameters specified
MATRIX X
This is a LOWER TRIANGULAR matrix of order 1 by 1
1
1 1
MATRIX Y
This is a LOWER TRIANGULAR matrix of order 1 by 1
1
1 2
MATRIX Z
This is a LOWER TRIANGULAR matrix of order 1 by 1
1
1 3
GROUP NUMBER: 3
G3: Male DZ twins in larger families
MATRIX A
This is a computed FULL matrix of order 1 by 1
It has no free parameters specified
MATRIX B
This is a SYMMETRIC matrix of order 2 by 2
It has no free parameters specified
MATRIX C
This is a computed FULL matrix of order 1 by 1
It has no free parameters specified
MATRIX E
This is a computed FULL matrix of order 1 by 1
It has no free parameters specified
MATRIX H
This is a FULL matrix of order 1 by 1
It has no free parameters specified
MATRIX I
This is an IDENTITY matrix of order 2 by 2
MATRIX P
This is a computed FULL matrix of order 2 by 2
It has no free parameters specified
MATRIX X
This is a LOWER TRIANGULAR matrix of order 1 by 1
1
1 1
MATRIX Y
This is a LOWER TRIANGULAR matrix of order 1 by 1
1
1 2
MATRIX Z
This is a LOWER TRIANGULAR matrix of order 1 by 1
1
1 3
Mx starting optimization; number of parameters = 3
MX PARAMETER ESTIMATES
GROUP NUMBER: 2
G2: Male MZ twins in larger families
MATRIX A
This is a computed FULL matrix of order 1 by 1
[=X*X']
1
1 0.2572
MATRIX B
This is a SYMMETRIC matrix of order 2 by 2
1 2
1 0.0000
2 0.0000 0.0000
MATRIX C
This is a computed FULL matrix of order 1 by 1
[=Y*Y']
1
1 0.4114
MATRIX E
This is a computed FULL matrix of order 1 by 1
[=Z*Z']
1
1 0.1154
MATRIX H
This is a FULL matrix of order 1 by 1
1
1 0.5000
MATRIX I
This is an IDENTITY matrix of order 2 by 2
MATRIX P
This is a computed FULL matrix of order 2 by 2
[=(I-B)~]
1 2
1 1.0000 0.0000
2 0.0000 1.0000
MATRIX X
This is a LOWER TRIANGULAR matrix of order 1 by 1
1
1 0.5072
MATRIX Y
This is a LOWER TRIANGULAR matrix of order 1 by 1
1
1 0.6414
MATRIX Z
This is a LOWER TRIANGULAR matrix of order 1 by 1
1
1 0.3396
OBSERVED COVARIANCE MATRIX
EXTER1 EXTER2
EXTER1 0.9230
EXTER2 0.7980 0.9070
EXPECTED COVARIANCE MATRIX
EXTER1 EXTER2
EXTER1 0.7840
EXTER2 0.6686 0.7840
RESIDUAL MATRIX
EXTER1 EXTER2
EXTER1 0.1390
EXTER2 0.1294 0.1230
Function value of this group: 2.5141
Where the fit function is Maximum Likelihood
GROUP NUMBER: 3
G3: Male DZ twins in larger families
MATRIX A
This is a computed FULL matrix of order 1 by 1
[=X*X']
1
1 0.2572
MATRIX B
This is a SYMMETRIC matrix of order 2 by 2
1 2
1 0.0000
2 0.0000 0.0000
MATRIX C
This is a computed FULL matrix of order 1 by 1
[=Y*Y']
1
1 0.4114
MATRIX E
This is a computed FULL matrix of order 1 by 1
[=Z*Z']
1
1 0.1154
MATRIX H
This is a FULL matrix of order 1 by 1
1
1 0.5000
MATRIX I
This is an IDENTITY matrix of order 2 by 2
MATRIX P
This is a computed FULL matrix of order 2 by 2
[=(I-B)~]
1 2
1 1.0000 0.0000
2 0.0000 1.0000
MATRIX X
This is a LOWER TRIANGULAR matrix of order 1 by 1
1
1 0.5072
MATRIX Y
This is a LOWER TRIANGULAR matrix of order 1 by 1
1
1 0.6414
MATRIX Z
This is a LOWER TRIANGULAR matrix of order 1 by 1
1
1 0.3396
OBSERVED COVARIANCE MATRIX
EXTER1 EXTER2
EXTER1 0.6710
EXTER2 0.4480 0.7000
EXPECTED COVARIANCE MATRIX
EXTER1 EXTER2
EXTER1 0.7840
EXTER2 0.5400 0.7840
RESIDUAL MATRIX
EXTER1 EXTER2
EXTER1 -0.1130
EXTER2 -0.0920 -0.0840
Function value of this group: 2.4331
Where the fit function is Maximum Likelihood
Your model has 3 estimated parameters and 6 Observed statistics
Chi-squared fit of model >>>>>>> 4.947
Degrees of freedom >>>>>>>>>>>>> 3
Probability >>>>>>>>>>>>>>>>>>>> 0.176
Akaike's Information Criterion > -1.053
RMSEA >>>>>>>>>>>>>>>>>>>>>>>>>> 0.060
This problem used 0.5% of my workspace
Task Time elapsed (DD:HH:MM:SS)
Reading script & data 0: 0: 0: 0.00
Execution 0: 0: 0: 0.05
TOTAL 0: 0: 0: 0.05
Total number of warnings issued: 0
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