- Testable predictions
- Explanations
- Useful/purposeful 

Skidmore College

Broad bodies of knowledge explaining prosperous phenomena 

Theories 

Fried, E. I. (2020). [Theories and models: What they are, what they are for, and what they are about.](https://doi.org/10.31234/osf.io/s2j5a)

The Installation of theory is more concrete and applies to a specific aspect of a psychological theory. 

Description, Explanation, Prediction, Control

- Are Robust Phenomenas with Robust Effects
- Represent Target Symptoms
- Providing Levels
- Real Entities