MMR vaccine. The MMR vaccine contains vaccines that protect against three viral infections: measles, mumps and rubella. It is given as a series of two doses at 12 to 15 months of age and at 4 to 6 years of age.ubella is a viral infection also known as German measles. Rubella infection of children causes a mild rash on the face, swelling of glands behind the ear, occasionally a short-lived swelling of small joints (like the joints of the hand), and low-grade fever.
Key Concepts. Eriksonâs psychosocial theory of development considers the impact of external factors, parents and society on personality development from childhood to adulthood. According to Eriksonâs theory, every person must pass through a series of eight interrelated stages over the entire life cycle[2]. Basic Trust vs. Mistrust â Hope.
Kohlberg observed that children advance through what he believed to be definite stages of moral development in a manner similar to their progression through Piaget s (1977) two-stage theory of cognitive development which Kohlberg studied as a graduate student at the University of Chicago.niversal moral principles Kohlberg believed that individuals could only progress through these stages one stage at a time. This view contrasted with Maslow s (1943, 1968, 1972) hierarchy of prepotent needs because human beings, according to Kohlberg, could neither skip stages nor return to any previous stage.