1.3 Incomes and Cross elasticity of Demand 需求收入弹性与需求交叉弹性
需求收入弹性与需求交叉弹性 1.3 Incomes and Cross Elasticity of Demand
教学目标 Objectives: 理解需求收入弹性、交叉弹性的含义 ■了解需求收入弹性的种类 掌握恩格尔定律的基本內容 ■明确需求收入弹性在社会经济生活中的应用 ■学会运用需求交叉弹性理论 知识点 Knowledge 需求收入弹性、需求交叉弹性 恩格尔定律 技能点Si: 需求收入弹性的运用 需求交叉弹性的运用
教学目标Objectives： ▪ 理解需求收入弹性、交叉弹性的含义 ▪ 了解需求收入弹性的种类 ▪ 掌握恩格尔定律的基本内容 ▪ 明确需求收入弹性在社会经济生活中的应用 ▪ 学会运用需求交叉弹性理论 知识点Knowledge： ▪ 需求收入弹性、需求交叉弹性 ▪ 恩格尔定律 技能点Skills： ▪ 需求收入弹性的运用 ▪ 需求交叉弹性的运用
专业词汇 Professional terms Income elasticity of demand Cross elasticity of demand international trade balance of payments
Income elasticity of demand Cross elasticity of demand international trade balance of payments 专业词汇Professional terms
、需求收入弹性 (一)什么是需求收入弹性 (Income elasticity of demand) Income elasticity The responsiveness of demand to a change in consumer income The major determinant of income elasticity of demand is the degree of 'necessityof the goods. 需求收入弹性被用来表示消费者对某种商品需求量 的变动对收入变动的反应程度
（一）什么是需求收入弹性 (Income elasticity of demand) Income elasticity The responsiveness of demand to a change in consumer income. The major determinant of income elasticity of demand is the degree of ‘necessity’ of the goods. 需求收入弹性被用来表示消费者对某种商品需求量 的变动对收入变动的反应程度。 一、需求收入弹性
、需求收入弹性 (二)需求收入弹性的种类 Normal goods goods whose demand increases as consumer income increase. They have a positive income elasticity of demand. Luxury goods will have a higher income elasticity of demand than more basic goods 正常品( ormal good 劣等品( inferior good)
（二）需求收入弹性的种类 ▪ Normal goods Goods whose demand increases as consumer income increase. They have a positive income elasticity of demand. Luxury goods will have a higher income elasticity of demand than more basic goods. ▪ 正常品 (normal good) ▪ 劣等品 (inferior good) 一、需求收入弹性