Memory is the ability to store and retrieve information. There are different types of memory. The three main types of memory are sensory memory, short-term memory, and long-term memory.

Sensory Memory

Sensory memory is the earliest stage of memory. It is the ability to retain impressions of sensory information after the original stimuli have ended. Sensory memory only lasts for a brief moment before either being stored in short-term memory or forgotten.

Short-term Memory

Short-term memory holds information for a limited amount of time, usually around 20 seconds. It has a limited capacity and can only hold about seven items at a time. Short-term memory is also known as working memory because it is where we process information that we are currently working on.

Long-term Memory

Long-term memory is where we store memories for an extended period of time. Long-term memories can last from a few days to several years. Long-term memory has unlimited capacity, and information can be stored indefinitely. Long-term memory is divided into two types: explicit memory and implicit memory.

Explicit Memory

Explicit memory is consciously recalled information. It is also known as declarative memory because it is where we store facts and events that we can consciously recall. Examples of explicit memory include remembering a phone number or the day you graduated from college.

Implicit Memory

Implicit memory is information that we have unconsciously learned, and we are not aware that we know it. Implicit memory is also known as non-declarative memory because it is where we store skills and habits that we have learned. Examples of implicit memory include riding a bike and typing on a keyboard.

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