4. ailed introduction about main contents in this field and her main research achievements.thank you very much.theory-of-mind development is the area of cognitive developmentresearch that investigates the nature and development of our understandingof the mental worldthe inner world inhabited by beliefs
19. he price they expect to receive in each market choice but also on additional costs related to transacting in these markets.i want to use a picture to illustrate it. for example, given some market channels, farmers choices can be regarded as equilibrium between the surplus and the additional costs th
21. ccand language aqusition in childhood etc.and reaserchers in area of children social development use psychoanalytic theory,social learning theory and cognitive development theory to explain the children's social motivation and emotion, social behavior, social cognition development and other ment
22. a function like this q? ? q, q means the output farmers decide qto produce .p implies the output price w implies input price and.z: ? is fixed input. once produce what and produce how many are decided, next question to be considered is how much products to be transacted in market. here we use three
29. at related to transacting .especially in developing countries, high-value crop producers fully participate in the market and the transaction cost has been the hard constraint to farmers. furthermore, farmers market choices can be taken as a choice dilemma of transaction cost and production surplus.
30. ll, lets move on the first part of this topic .the motivation of this work like this. institutional economics posits that agents making decisions on different types of transactions do so in a costly way .for example , farmers deciding sell a particular crop to whom base their decisions not only on t
35. al phenomena.the level of children's cognitive development is the basis of their social development. in contrast,children's social development contributes to their cognitive development. in a word,both between is complementary relationship. so let's welcome professor ding to give our det