あなたのDNAがあなたの投資姿勢を呪縛している!?
Is Your Investing Personality in Your DNA? (WSJ.com)
Whatever investing mistake you have committed lately, there is probably a gene that is often associated with that behavior. Are you predestined to be the prisoner of your genetic code?
To find out, I recently spent a day at the University of Pittsburgh getting a battery of DNA analyses and brain scans. I consider myself a patient and disciplined investor, so I volunteered as a guinea pig in Ahmad Hariri's imaging genetics lab to learn how my genes and brain activity shape my behavior. The results shocked me.
After I spit into a cup, Dr. Hariri had my DNA analyzed to find out which form I have of five genes that influence the brain circuits that generate decisions about risk and reward over time. His findings: In all five genes, I have a variant, or allele, that is sometimes associated with bad investing decisions.
Consider the FAAH gene. Roughly 25% of people with European ancestry carry the 385A allele of this gene. That tends to damp their brains' fear circuitry and to intensify their brains' reaction to the prospect of making money. I am one of those people.
Or take the DRD2 gene. Some 20% of Caucasians have an allele that can make them respond more intensely to gambles, even when no skill is involved. I have it.
variant: 変異体
allele: 対立遺伝子
http://online.wsj.com/article/SB123879381940987845.html
※DNA解析に関する部分のみ引用しています。
WSJのジェイソン・ツヴァイクさんの体験談です。ピッツバーグ大のハリリ教授が投資姿勢を左右すると思われる５つのDNAを解析しました。結果は……。
リスクや収益に対する感受性に関連する遺伝子は、当然、投資姿勢以外のことにも影響します。精神疾患や○○依存症にも何らかの関連があると聞きました。アルコール依存症、ギャンブル依存症、ドラッグ依存症、……。
ただDNAの示す傾向がそのまま実生活に反映されるわけではなく、むしろ経験や環境などの方が大きな影響を与えるのも事実でしょう。記事にも実行動に対するDNAの影響は20％ぐらいとあります。
自分がどのようなDNAを持っているのか？これからより良い決断を下すために、知っておく意味はあるように思われます。人は追い込まれたとき、DNAの影響が表面化する可能性もあると考えます。