Direct HRV-biofeedback reduction of CU traits

Dissertation shows physiology changes, not direct CU reduction

Registry status

• Type: evidence-gap
• Year: 2026
• Population: young-adulthood
• Construct role: open-trait-gate
• Source grade: D/C
• Attribution: mixed
• Verification: open

Incoming relationships

• 2026 technology-enhanced intervention synthesis → creates-open-gate — historical: high; evidentiary: high