人在什麼時候會風險偏好? - 經濟

By James
at 2010-10-08T14:28
at 2010-10-08T14:28
Table of Contents
經濟學一般是認為人大多是風險趨避
也用此推論出高風險高報酬的現象
更高的預期報酬,伴隨更高的風險
但是我好奇,許多人往往似乎不是風險趨避?
以南部地區的騎機車現象
許多人寧願不要二次待轉、不願意等紅綠燈、也很多不戴安全帽
其實"等紅綠燈"類似在買保險
你用幾十秒的時間(付出的保費),而得到一個穩定的時間跟穩定的平安
而闖紅燈則是不買保險
不願意付出小額的保類(幾十秒的等待時間),而去冒一個可能出事的風險
但是他們真的是風險偏好嗎??
其實我覺得原因是過度自信
認為騎車技術夠好、認為反應夠快、也認為自己部會這麼倒楣
所以就低估了出事的機率
也因此對他們來說,等紅綠燈反而是浪費"保費"
因為對他們來說期望的損失,比保費還要低
所以即使他們是風險趨避者,也一樣會闖紅燈
關鍵在於他們對於風險的低估、對自己能力的高估
一些感想
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