Objective
This study investigated the Diffusion of Innovation (DoI) model in explaining the frequency of adoption and intention to adopt Cattell‐Horn‐Carroll (CHC) theory by practicing Australian psychologists as a well‐validated interpretive model when conducting cognitive assessments.
Method
Participants were psychologists with general registration (N = 42‐78 depending on the analysis) who completed a survey assessing cognitive assessment practices and perceived innovation characteristics of the CHC model.
Results
Few psychologists in the sample were found to be employing CHC in practice, supporting the presence of a theory‐practice gap within the cognitive assessment field in Australia. In addition, it was found that the DoI perceptions of compatibility, complexity, and relative advantage were helpful in explaining adoption/non‐adoption.
Conclusions
Highlighting the compatibility, complexity and relative advantage of the CHC model to psychologists could assist with addressing the theory‐practice gap in cognitive assessment in Australia