Diffusion of Innovations
and Related Theories

• Diffusion of Innovations Home
• Original Models
• Eclectic Models
• Unified Models
• Gallivan's Perspective
• Tangential Theories & Constructs

Unified Models

Attempts have been made to unify the various theory streams, as combinations lost parsimony. Perhaps most notable so far is UTAUT.

UTAUT

Venkatesh et al. (2003) gathered constructs from TAM, CSE, TRA/TPB, MCPI, and IDT to formulate the Unified Theory of Acceptance and Use of Technology (UTAUT). They concluded that different groups of people fit different models, and that a single model did not explain variation in behavior well.

TTF-UTAUT

In yet another attempt to create a comprehensive model, Dishaw, Strong, and Bandy (2004) suggested adding TTF constructs to UTAUT. As of this writing, their results have not been published.