The document outlines the Information Processing Model, which likens human thinking to computer processing. It describes the three types of memory - sensory, short-term, and long-term. Sensory memory briefly stores initial stimuli through iconic, echoic, and haptic forms. Short-term memory retains information through encoding, rehearsal, and storage before it is either transferred to long-term memory or forgotten. Long-term memory securely stores information for long periods through procedural, semantic, and episodic memory types.