Timeline
Oretha Drain
Grand Canyon University
Psychology
March 22, 2009
Developmental Timeline
2009 The Human Genome Project completed sequencing all 3 billion chemical base pairs in Human DNA.
1999 (Nelson) Early learning environments literally shape the developing brain, through “blooming and pruning” of synapses
1996 As early as 9 months of age infants can imitate actions a day after seeing
Them (Meltzoff & Heimann)
2002 A baby’s mind is designed to soak up information, which it does at an
amazing pace (Meltzoff & Prinz)
2004 Most infants have to be 18 months old before they recognize themselves
(Nielsen & Dissanayake)
1997 The parental styles of mothers and fathers have a major impact on
children’s gender role development (Lindsay, Mize, Pittit)
2006 After age 2, the child’s comprehension and use of words take a
dramatic leap forward (Fernald, Perfors & Marchman)
1962,1978 Jean Piaget provides some of the first great insights into how children
thinking abilities when he proposed that children’s cognitive skills
progress through a series of maturational stages.
(0-2 years) The Sensorimotor Stage: Developments in this
stage indicates that the child’s conceptions are becoming
more stable
(2-7years) The Preoperational Stage: Even though preoperational children can form mental images or ideas, they cannot easily transform those images or ideas in their minds
(7-11 years) The Concrete Operational Stage: The ability to carry out mental operations such as reversing thoughts
(11 Years and UP) The Formal Operations Stage: Period of intellectual development characterized by thinking that includes abstract theoretical and hypothetical ideas
1962 Lev Vygotsky’s key insight is that children’s thinking develops through
dialogues with more capable persons
1981 Lawrence Kohlberg held that we learn moral values through thinking and
reasoning. Kohlberg posed...