1. Types of Concepts

2. Empirical Concepts Concepts whose intentions are observable and thus, the members of their extension are found in space and time Observable through the unaided senses; thus passes the inter & intra subjectivity test

4. Abstract Concepts No physical referents Extension cannot be found in this world Usually used in formal sciences Abstract concepts are clearly defined but is not observable

5. Abstraction is a conceptual process by which higher, more abstract concepts are derived from the usage and classification of literal, "real," or "concrete" concepts. An "abstraction" (noun) is a concept that acts as super- categorical noun for all subordinate concepts, and connects any related concepts as a group, field, or category.higherclassificationliteralgroupfieldcategory

6. Concept of Tautology (P v ~P) Always true because in all possible substitution of its truth values the statement is true. infinity

7. Fictitious Concepts Imagined/invented concepts by people for various purposes Clearly defined but extensions of the concept are imaginary

9. Dispositional Concepts These concepts do not designate a directly observable trait or characteristic but they exhibit a certain observable disposition if certain operations are performed.

10. e.g. Elasticity Magnetism Temperature Gravity

11. Theoretical Concepts Borders on the line between observable and the unobservable. Can only be observable only through human intervention using sensory extending devices.

13. Evaluative Concepts Moral, aesthetic, religious Moral-concept of good & bad Aesthetics-beauty and ugliness Religious- Heaven & Hell The concept of value plays an important role in evaluative concepts so it’s definition can be unclear.

15. Metaphysical Concepts Has no physical, observable traits—hence the term meta (beyond) e.g. The mind- the intension of the concept mind in an entity wc is fundamental. It is indivisible, eternal, no weight, no mass— cannot be located in space but it exists in time. God, eternal, being