/TITLE
 This is EQS syntax for linear Model 2: bifactor model with 1 group factor
/SPECIFICATIONS

 DATA=demodata.ess;

 VARIABLES=7; CASES=293;
 METHOD=ML; ANALYSIS=COVARIANCE; MATRIX=RAW;
/LABELS

 V1=X1; V2=X2; V3=X3; V4=X4; V5=X5; 
V6=X6; V7=X7; 

/EQUATIONS

 V1 =   *F1 + *F2 + E1;
 V2 =   *F1 + *F2 + E2; 
 V3 =   *F1 + *F2 + E3; 

 V4 =   *F1 + E4; 
 V5 =   *F1 + E5; 

 V6 =   *F1 + E6; 

 V7 =   *F1 + E7; 

/VARIANCES

 F1 = 1;
 F2 = 1;
 
 E1 = *; 
 E2 = *;
 E3 = *; 
 E4 = *;

 E5 = *; 
 E6 = *;  E7 = *; 

/COVARIANCES

/PRINT
FIT=ALL;
 
TABLE=EQUATION;

/END




/TITLE
 This is EQS syntax for linear Model 3: bifactor model with 1 group factor
/SPECIFICATIONS

 DATA=demodata.ess;

 VARIABLES=7; CASES=293; 

 METHOD=ML; ANALYSIS=COVARIANCE; MATRIX=RAW; 

/LABELS

 V1=X1; V2=X2; V3=X3; V4=X4; V5=X5; 
V6=X6; V7=X7; 

/EQUATIONS

 V1 =   *F1 + *F2 + E1; 
 
V2 =   *F1 + *F2 + *F3 + E2; 
 
V3 =   *F1 + *F2 + E3; 
 
V4 =   *F1 + E4; 
 
V5 =   *F1 + *F3 + E5; 
 
V6 =   *F1 + *F3 + E6; 
 
V7 =   *F1 + E7; 

/VARIANCES

 F1 = 1;
 F2 = 1;
 F3 = 1;
 
 E1 = *; 
 E2 = *; 
 E3 = *; 

 E4 = *; 
 E5 = *; 
 E6 = *; 
 E7 = *;

/COVARIANCES

/PRINT
FIT=ALL;

 TABLE=EQUATION;

/END




/TITLE
 This is EQS syntax for linear Model 4: bifactor model with 1 group factor and correlated errors
 among items 2, 5, and 6
/SPECIFICATIONS

 DATA=demodata.ess;

 VARIABLES=7; CASES=293; 

 METHOD=ML; ANALYSIS=COVARIANCE; MATRIX=RAW; 

/LABELS

 V1=X1; V2=X2; V3=X3; V4=X4; V5=X5; 
V6=X6; V7=X7; 

/EQUATIONS

 V1 =   *F1 + *F2 + E1; 
 
V2 =   *F1 + *F2 + E2; 

 V3 =   *F1 + *F2 + E3; 
 
V4 =   *F1 + E4; 
 
V5 =   *F1 + E5; 
 
V6 =   *F1 + E6; 
 
V7 =   *F1 + E7; 

/VARIANCES

 F1 = 1;
 F2 = 1;
 
 E1 = *; 
 E2 = *; 

 E3 = *; 
 E4 = *; 
 
 E5 = *; 
 E6 = *; 
 E7 = *;

/COVARIANCES

 E5,E2 = *; 

 E6,E2 = *;
 
E6,E5 = *; 
/COVARIANCES

/PRINT
FIT=ALL;

 TABLE=EQUATION;

/END