Conceptual model, mental model, roadmap and framework

1. What is conceptual model and mental model?
2. What is the difference between a roadmap and a framework?
3. What are types of mental model in HCI?
4. What are mental models in UX?

What is conceptual model and mental model?

In short: conceptual models are blueprints for how we intend something to work, mental models are how we think something will work.

What is the difference between a roadmap and a framework?

Roadmap and frameworks are much broader terms, but I have put them into the UX context I think you're talking about - essentially your roadmap is your plan for how to deliver, and a framework is the set of constraints you have to operate within.

What are types of mental model in HCI?

There are three models of the system

 User Model – How the user thinks the product works.  UI Model – How the product is presented to the user in the user interface.  Implementation Model – How the product is actually implemented.

What are mental models in UX?

In the context of UX design, mental models are what the user believes about how the user experience works. Mental models are constructed in a user's brain and are based on what they know from past interactions with other products, sites, and applications.