The purpose of this chapter is to provide introduction of cognitive psychology many important and varied aspects are discussed in this chapter. Some of main features include the following:-

• Cognitive psychology is deal with the information processing of the knowledge.  Research and theoretical approaches are used from other domain of research such as Psychology, Neuroscience, perception, attention and consciousness, thinking and concept formation, memory, representation of knowledge and artificial intelligence etc.
• According to Information processing model, information is processed through a series of stages to perform a unique function.
• Psychologist devise conceptual model, which is metaphor to comprehend reality, in cognitive psychology to developing a system that reflects the nature of human perception, thought, and understanding of the world.
• Cognitive models, which describe the structure and processes of cognition, are based on observation.
• In Parallel distributed processing model, information is thought to be processed in similar way of neurological network.