No—its presence alone doesn’t single out psychopaths.
- Prevalence in the general population is ~5–20 % depending on age, sex, scan resolution, and diagnostic criteria used.
- Meta-analysis of forensic samples (Boccardi et al., 2010; Schiffer et al., 2013) finds CSP enlarged (>6 mm) in roughly one-third to one-half of high-scoring PCL-R psychopaths, which is statistically higher than community samples but leaves the majority of non-criminals—and a substantial minority of psychopaths—without it.
- Traumatic brain injury, schizophrenia, bipolar disorder, autism, and even normal variants also show CSP overlap; therefore its specificity for psychopathy is low.
So while an enlarged CSP may correlate with psychopathy in some forensic cohorts, it is neither necessary nor sufficient for diagnosis and is far from unique to psychopaths.
Hmmm.
The Path Whisperer 