BIOLOGICAL APPROACHE

BIOLOGICAL APPROACHE

1. GENETIC FACTORS

   • Chromosomal Abnormalities
     • E
     • D
       • Early research the sex chromosomes
       • the 47 XYY karyotype
       • men with XYY were more aggressive
   • MAOA Gene
   • Selective Breeding

2. NEURAL MECHANISMS

   • limbic system
   • frontal cortex
   • Serotonin

3. HORMONAL MECHANISMS

   • HORMONAL MECHANISMS
   • Reciprocal Model
   • Basal Model