Table 2. Model Fitting Results for Independent Pathway Models for the 10 DSM-IV Personality Disorders.
| Common Factors | Specifics | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Model | A | C | E | A | C | E | Δχ2 | Δ df | AIC |
| 1 IPa | 3 | 3 | 3 | Present | Present | Present | NAb | NAb | NAb |
| 2 CP | NAb | NAb | NAb | Present | Present | Present | 180.0 | 33 | + 114.0 |
| 3 IPc | 3 | 0 | 3 | Present | Absent | Present | 40.8 | 37 | −33.2 |
| 4 IP | 0 | 3 | 3 | Absent | Present | Present | 144.5 | 37 | + 70.5 |
| 5 IP | 2 | 0 | 3 | Present | Absent | Present | 97.9 | 45 | + 7.9 |
| 6 IP | 3 | 0 | 2 | Present | Absent | Present | 116.3 | 45 | + 26.3 |
| 7 IP | 3 | 0 | 3 | Absent | Absent | Present | 116.6 | 47 | + 22.6 |
Abbreviations: A, additive genetic effects; AIC, Akaike information criterion; C, shared environment; CP, common pathway; DSM-IV, Diagnostic and Statistical Manual of Mental Disorders (Fourth Edition); E, unique environment; IP, independent pathway; NA, not applicable.
a
−2lnL = 52783.4; df = 27 783.
b
The common pathway model had a total of 3 common factors, each of which had individual A, C, and E influences.
c
Best-fit model.