All multiattribute attitude models specify the importance of attributes, beliefs, and ________.

According to the principle of cognitive consistency, consumers value harmony among their thoughts, feelings, and behaviors, and they are motivated to maintain uniformity among these elements. If necessary, consumers will change their thoughts, feelings, or behaviors to make them consistent with their other experiences.

Cognitive dissonance theory is one of the most influential approaches to attitudes based upon the consistency principle. The theory focuses on situations where two cognitive elements are inconsistent, creating a feeling of discomfort that the consumer is motivated to reduce by making things fit with one another. Dissonance can be reduced by eliminating, adding, or changing elements. The pressure to reduce dissonance is more likely to be observed in high-involvement situations where the elements are important to the individual.
An application of dissonance theory is that evaluations of a product tend to become more positive after the product has been purchased. Consumers find even more reasons to like something after it becomes theirs. An implication of this phenomenon is that consumers actively seek support for their purchase decisions; marketers should supply them with additional reinforcement to build positive brand attitudes.

Recommended textbook solutions

What is Multiattribute attitude model?

Multi-attribute attitude models portray consumers' attitudes with regard to an attitude object as a function of consumers' perception and assessment of the key attributes or beliefs held with regard to the particular attitude object.

Which attitude function relates to the consumer's self concept or central values?

There are different attitude functions:  Utilitarian function relates to the basic principles of reward and punishment, we develop some attitudes towards products simply because they provide pleasure or pain.  Value-expressive function relate to the consumer's self-concept ore central values.
The utilitarian function relates to the basic principles of reward and punishment. Attitudes only serve one function at a time. This is what makes them easy to study and chart.
Chapter 8 Consumer Behavior - 12E.