Attitude accessibility is a measure of the strength of the association between an object and a person’s attitude towards it. This is measured by how quickly the individual can report what their feelings are about it. Reports that are given quickly indicate high accessibility, and can be more predictive of behaviour.
Source:
Fazio, R. H. (1986). How do attitudes guide behavior? In R. M. Sorrentino & E. T. Higgins (Eds.). “Handbook of Motivation and Cognition, Volume 3: The Interpersonal Context