Visual Legend

Node classes

• ● Empirical study
• ◆ Major finding
• ⬢ Methodological capability
• △ Theory / hypothesis
• ▣ Intervention
• ⊘ Constraint / null / boundary-setting result
• ◇ Convergence point
• ? Open evidentiary endpoint

Edge classes

• Solid: documented continuation
• Dashed: strongly inferred continuation
• Dotted: tentative reconstruction
• Bidirectional: transactional/reciprocal relationship

Evidence badges

• OBS — observational association
• LONG — longitudinal prediction
• EXP — experimental manipulation
• RCT — randomized controlled intervention
• CLIN — distal clinical/behavioral endpoint
• REP — independent replication
• TRANS — real-world translation/effectiveness