Parameter: λ12 Identified

Algebraic Equations:

σ11λ1212

Single Door Criterion:

{1} ⊥ {2} | {}

Parameter: λ13 Identified

Algebraic Equations:

σ122λ1311σ22λ1313σ2212σ23

Single Door Criterion:

{1} ⊥ {3} | {2}

Parameter: λ14

Parameter: λ23 Identified

Algebraic Equations:

σ122λ2312σ1311σ22λ2311σ23

Single Door Criterion:

{2} ⊥ {3} | {1}

Parameter: λ24

Parameter: λ34

Parameter: ω11 Identified

Algebraic Equations:

1111

Parameter: ω14

Parameter: ω22 Identified

Algebraic Equations:

σ12211σ2211ω22

Parameter: ω33 Identified

Algebraic Equations:

132σ22+2σ12σ13σ2311σ232122σ3311σ22σ33122ω3311σ22ω33

Parameter: ω34

Parameter: ω44

Total Effect of X1 on X3: λ12λ2313 Identified

Each Parameter Identified

Back Door Criterion:


{1} ⊥ {2,3} | {}

Total Effect of X1 on X4: λ12λ23λ3412λ2413λ3414

Path-specific Effect of X1 on X4: λ12λ23λ34

Path-specific Effect of X1 on X4: λ12λ24

Path-specific Effect of X1 on X4: λ13λ34

Total Effect of X2 on X4: λ23λ3424 Identified

Algebraic Equations:

σ122λ23λ34122λ2412σ1411σ22λ23λ3411σ22λ2411σ24

Back Door Criterion:

{2} ⊥ {3,4} | {1}

Path-specific Effect of X2 on X4: λ23λ34

Vanishing Ideal

Zero Vanishing Ideal