Gestalt
http://www.usask.ca/education/coursework/skaalid/theory/gestalt/gestalt.htm
http://mitpress2.mit.edu/e-journals/Leonardo/isast/articles/behrens.html
http://chd.gse.gmu.edu/immersion/knowledgebase/strategies/cognitivism/gestalt/gestalt.htm

Semiotics
http://www.boxesandarrows.com/archives/semiotics_a_primer_for_designers.php
http://carbon.cudenver.edu/~mryder/semiotics_este.html
http://www.press.jhu.edu/books/hopkins_guide_to_literary_theory/semiotics.html
iconic
indexical
symbolic

Constructivism
http://carbon.cudenver.edu/~mryder/itc_data/constructivism.html

Ecological Theory
http://www.aesthetics-online.org/ideas/freeland2.html
http://log24.com/theory/bdesigns/
http://www.calresco.org/lucas/eiem.htm

Cognitive
http://www.aesthetics-online.org/ideas/freeland2.html
http://psych.ucsc.edu/dreams/Library/hall_1953a.html
http://csmaclab-www.uchicago.edu/philosophyProject/picture/picture.html

Huxley-Lestor

Omniphasism
http://www.siggraph.org/education/vl/vl.htm