Extraversion and introversion are roughly 40 to 60 percent heritable, shaped by dopamine and serotonin genes including DRD4, DRD2, COMT (rs4680), and SLC6A4. This article explains how these variants influence reward sensitivity and social temperament — and why genetics sets tendencies, not a fixed personality.

Creativity is polygenic, not a single gene. Variants in COMT, DRD2, and BDNF shape dopamine processing, novelty seeking, and neuroplasticity, tilting how you generate and refine ideas. This article explains the science and the evidence-based habits — sleep, exercise, novel learning — that enhance creativity across any genetic background.

The MAOB gene encodes monoamine oxidase B, an enzyme that clears dopamine and generates oxidative byproducts. Variants like rs1799836 have been studied in Parkinson's disease, depression, chronic fatigue, and smoking behavior. This article explains the biology, related genes MAOA and COMT, and what pathway-level genetic insight reveals.

The FKBP5 gene acts as a dimmer switch on the body's cortisol stress system, and its variants shape susceptibility to anxiety, depression, PTSD, and chronic pain. This article explains how FKBP5 works, the rs1360780 variant, its gene-by-environment effects, and what pathway-level genetic insight can reveal.

Aggression is roughly 40–60% heritable, shaped by genes such as MAOA (the "warrior gene" variant) and COMT Val158Met that govern dopamine and serotonin signaling. This article explains how these variants interact with environment, why genotype is never destiny, and what pathway-level genetic context can add.

Sensation seeking has four components — thrill and adventure seeking, experience seeking, disinhibition, and boredom susceptibility — all tied to dopamine biology. Gene variants in DRD4 and COMT (Val158Met) influence novelty response and reward sensitivity. Learn what the science shows and how pathway-level genetic insight adds context to your biology.

Genetics explain roughly 50–60% of reaction-time differences, driven by genes such as COMT and BDNF that tune dopamine clearance and neuroplasticity. This guide explains how reaction time works, what your DNA contributes, and evidence-based habits — sleep, exercise, and practice — that sharpen cognitive speed.