Behavior Timeline: Child development, Ages 5--18 By angrylin Period: Jan 1, 2005 to Jan 1, 2008 Ages 5--8 Dec 24, 2006 Typical behaviors for this stage: ~ Investigative/curious Jan 24, 2007 ~ Obsessed with rules, and view rules in stark dichotomy Dec 24, 2007 ~ Seeks approval from authority figures Dec 24, 2009 Typical behaviors for this stage: Shift to seeking approval from peers Period: Dec 24, 2009 to Dec 25, 2012 Ages 9--12 Dec 24, 2010 Shift to viewing rules as gray areas Dec 24, 2011 Increasingly self-conscious Period: Dec 24, 2013 to Dec 25, 2018 Ages 13--18 Dec 24, 2014 Typical behaviors for this stage: Emotional & over-reactive Dec 24, 2015 Poor-planning and judgment Dec 24, 2017 Risky, impulsive