Perceptual psychology is a branch off of cognitive psychology dealing with mental processes that we use in everyday living. Any time you problems-solve, make a decision, make a memory or reflect on one you are using an example of perceptual psychology . Perceptual psychology is often used in therapy to help a patient better their problem-solving skills. 
A pioneer of this field was James J. Gibson. A major study was that of cognitive biases mostly due to affordances, i.e. the perceived utility of objects in, or features of, one's surroundings. According to Gibson, such features or objects were perceived as affordances and not as separate or distinct objects in themselves. This view was central to several other fields as software user interface and usability engineering, environmentalism in psychology, and ultimately to political economy where the perceptual view was used to explain the omission of key inputs or consequences of economic transactions, i.e. resources and wastes.
Gerard Egan and Robert Bolton explored areas of interpersonal interactions based on the premise that people act in accordance with their perception of a given situation. While behaviour is obvious, a person's thoughts and feelings are masked. This gives rise to the idea that the most common problems between people are based on the assumption that we can guess what the other person is feeling and thinking. They also offered methods, within this scope, for effective communications. This includes: reflective listening, assertion skills, conflict resolution etc.
Nativism Vs. Empiricism
Nativism and empiricism have been researched and debated to find out which one is the basis of research in the development of perception.
Nativists think we are born with all the perceptual abilities needed. This is the favored of the theories on perception. Empiricists debate that we are not born with perceptual abilities but instead that we must learn them. 
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