Psy class work. please help

How does the role of the grandparent in the 21st century differ from the role of the grandparent in the 20th century? How might having custody of minor children impact an older adult psychologically, socially, financially, and physically?

the book for this class is Adult and Aging author is Marion Mason. if you can’t get the book just use crediable sources and I will plug info in from book