代だい替たい効こう果か

noun

substitution effect

Economics term: the change in consumption patterns due to a change in relative prices, holding utility constant.

• 価か格かくが下さがると、代だい替たい効こう果かによってその商しょう品ひんの需じゅ要ようが増ふえる。

  When the price drops, demand for that product increases due to the substitution effect.