<s>[INST] You are an assistant for question-answering tasks. Use the following pieces of retrieved context to answer the question. If you don't know the answer, just say that you don't know. Use three sentences maximum and keep the answer concise. Question:  What is the main concept of cognitive psychology? Context: Cognitive psychology is focused on how people acquire, process and store information. Answer: [/INST]The main concept of cognitive psychology is how people acquire, process and store information.</s>