Final answer:
A 'dual attitude system' refers to having differing explicit and implicit attitudes toward the same object, where explicit attitudes are controllable and implicit attitudes are uncontrollable and often reveal unconscious biases.
Step-by-step explanation:
A "dual attitude system" exists when we have differing explicit and implicit attitudes toward the same object. Explicit attitudes are conscious and controllable, such as expressing egalitarian views, which are socially desirable. Implicit attitudes are unconscious and uncontrollable and may reveal prejudices that are not apparent through explicit attitudes. For instance, even individuals who exhibit no explicit prejudice towards a group may still have implicit biases that affect their behavior unconsciously.