Abraham Maslow described how many stages of development?

In lecture the concept of adolescent egocentrism was described. All of the following characteristics of this phenomena were described, EXCEPT:

a. difficulty accepting that others may come to different conclusions based on the same evidence b. a sense that one's experiences are fundamentally different from those of others c. a sense that one is invulnerable to really bad things d. believing that others spend a lot of time being preoccupied with you

Explain how DZ and MZ twins are formed. Include a discussion of ethnic variations and factors that increase the chances of having twins

What will be an ideal response?