季芬財與炫耀財 - 經濟

By Oliver
at 2009-12-16T16:25
at 2009-12-16T16:25
Table of Contents
這兩種財貨的意義是天差地別的
但是有個相同的特性,就是違反需求法則(正斜率的需求曲線)
一般仿間書籍所說明的季芬財,有看過用無異曲線+所得線分析...
因劣等財的所得效果大於替代效果,造成需求曲線正斜率的結果
(ps.我是參閱四人幫那本..其他參考書也有看到相同的路徑解析方法..)
但是沒有關於炫耀財的...
我的疑問是..假如也用無異曲線解析的方式,要怎麼解釋炫耀財呢??
炫耀財必定不是劣等財,因此所得效果應該正的
(也就是所得與需求量成正比,恩格爾曲線是正斜率,這點與劣等財不同)
那麼究竟替代效果是怎樣?才會得到價格與需求量成正比的結果?
假如我的理解有誤..也請賜教...
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