Postmodernism in graphic design for the most part has been a visual and decorative movement. Many designers and design critics contend that postmodernism, in the literary or architectural sense of the term, never really impacted graphic design as it did these other fields. Alternatively, some argue that it did but took on a different persona. This can be seen in the work produced at Katherine McCoy's program at the Cranbrook Academy of Art in Michigan during the late 1980s to late 1990s and at the MFA program at CalArts in California.
– Excerpt from Wikipedia