For an overview of the theories of Erikson, Freud, Bowlby, and Piaget go to:
http://psychology.about.com/library/weekly/aa111502a.htm
For a more in-depth understanding of this chapter, go to the following web links:
Vygotsky:
http://tip.psychology.org/vygotsky.html
http://carbon.cudenver.edu/~mryder/itc_data/soc_cult.html
Vygotsky and Piaget:
http://www.massey.ac.nz/~alock//virtual/colevyg.htm
Piaget:
http://tip.psychology.org/piaget.html
Freud:
href=http://en.wikipedia.org/wiki/Sigmund_Freud
href=http://www.freudfile.org/
Erikson:
http://www.muskingum.edu/~psych/psycweb/history/erikson.htm http://www.childdevelopmentinfo.com/development/erickson.shtml http://psychology.about.com/od/theoriesofpersonality/a/psychosocial.htm