It's possible you're referring to a related concept, perhaps:
* Theory of Planned Behavior (TPB): This theory posits that a person's intention to perform a behavior is influenced by their attitude towards the behavior, subjective norms surrounding it, and perceived behavioral control. This could be loosely related to "consistent use" if you're considering the intention to use a product or service consistently.
* Habit Theory: This theory suggests that behaviors become automatic and habitual over time through repetition. This is relevant to "consistent use" as habits can lead to consistent engagement with a product or service.
* The Consistency Principle: This principle in psychology suggests that people strive for consistency in their beliefs and behaviors. This could be relevant to "consistent use" if you're considering how people might be more likely to continue using a product or service if it aligns with their existing beliefs and values.
Could you please provide more context about the "Theory of Consistent Use"? This will help me better understand what you are referring to and provide a more accurate response.