Abstract
One of the most significant current controversies in the attitude literature involves the latent structure of attitude attributes related to their strength. Four studies were conducted to explore whether 2 strength-related attributes (importance and accessibility) are affected identically by various manipulations (which would suggest that they reflect a single latent construct) and whether the attributes cause one another (which would suggest they are distinct constructs). Three laboratory experiments and 1 survey study show that (a) repeated expression and personal relevance manipulations have different effects on importance and accessibility and (b) increased importance can cause heightened accessibility. Thus, these 2 attitude attributes appear to constitute related but independent constructs. These studies therefore help to illuminate the nature of attitude strength and the interplay of its sources.