Memory retention refers to the ability of the brain to store and recall information over time. It involves various processes, including encoding, storage, and retrieval. Factors such as attention, repetition, and emotional significance can enhance memory retention, while distractions and stress may hinder it. Different types of memory, such as short-term memory and long-term memory, play a role in how we retain information. Neuroscience studies show that certain techniques, like mnemonics and spaced repetition, can improve memory retention by strengthening neural connections in the brain.