Procedural memory (skills)
These include physical and mental skills acquired over time, such as riding a bike, writing, or using a keyboard. Most of our procedural knowledge is used automatically without conscious recollection of how to apply it. Procedural memory is also known as implicit or habitual memory. While some skills that are learned, such as reading or riding a bike, endure without much practice, others such as speaking a foreign language or playing a musical instrument have a “use it or lose it” character, and must be kept in regular use to be retained. Borrow these habits of people with an impressive memory, and you’ll never have to worry about losing your brain power.
Short-term (working) memory
Short-term memory is temporary. Its principle characteristic is its low capacity, meaning it’s quickly saturated. We can retain on average seven unassociated items (such as letters, words, or numbers) for a few minutes—unless you train like a memory champion with these pro tricks to get a superhuman memory. This is called the “span.” Psychologists realized that short-term memory is in constant use as we talk, think, and act, so they began to refer to short-term memory as “working memory” to emphasize its active role.