In the given question, the blank can be filled with cognitive.
The study of mental procedures like language use, attention, perception, memory, creativity, problem-solving, and thinking is known as cognitive psychology. In psychology, the cognitive approach is a comparatively modern approach towards human behavior, which aims at how one thinks. It presumes that one's though procedures influence the manner in which one behaves.
The cognitive perspective is related to mental procedures and understanding like perception, memory, problem-solving, and thinking, and how these are associated with behavior.