Parameter: λ12

Parameter: λ14 Identified

Algebraic Equations:

σ132σ22λ14-2σ12σ13σ23λ1411σ232λ1414σ23213σ23σ24122σ33λ1411σ22σ33λ1414σ22σ3312σ24σ3313σ22σ3412σ23σ34

Single Door Criterion:

{1} ⊥ {4} | {2,3}

Parameter: λ24 Identified

Algebraic Equations:

σ132σ22λ24-2σ12σ13σ23λ2413σ14σ2311σ232λ24132σ24122σ33λ2412σ14σ3311σ22σ33λ2411σ24σ3312σ13σ3411σ23σ34

Single Door Criterion:

{2} ⊥ {4} | {1,3}

Parameter: λ34 Identified

Algebraic Equations:

σ132σ22λ3413σ14σ22-2σ12σ13σ23λ3412σ14σ2311σ232λ3412σ13σ2411σ23σ24122σ33λ3411σ22σ33λ34122σ3411σ22σ34

Single Door Criterion:

{3} ⊥ {4} | {1,2}

Parameter: ω11 Identified

Algebraic Equations:

1111

Parameter: ω12

Parameter: ω13 Identified

Algebraic Equations:

1313

Parameter: ω22

Parameter: ω23

Parameter: ω33 Identified

Algebraic Equations:

3333

Parameter: ω44 Identified

Algebraic Equations:

σ142σ232-2σ13σ14σ23σ24132σ242142σ22σ33+2σ12σ14σ24σ3311σ242σ33+2σ13σ14σ22σ34-2σ12σ14σ23σ34-2σ12σ13σ24σ34+2σ11σ23σ24σ34122σ34211σ22σ342132σ22σ44+2σ12σ13σ23σ4411σ232σ44122σ33σ4411σ22σ33σ44132σ22ω44-2σ12σ13σ23ω4411σ232ω44122σ33ω4411σ22σ33ω44

Total Effect of X1 on X4: λ12λ2414

Path-specific Effect of X1 on X4: λ12λ24

Vanishing Ideal

Zero Vanishing Ideal