Memory is how our brains store and remember information. Memory can be divided into three types that help us in different ways, especially when studying for exams. Here’s a simple guide to the types of memory in psychology and how they relate to studying:
1. Sensory Memory
- This includes Visual, Auditory, Touch, Taste and Smell.
- Duration: Very brief, typically lasting less than a second for visual stimuli (Visual or iconic memory) and a few seconds for auditory stimuli (Auditory or echoic memory).
- Capacity: While the duration is brief, echoic memory can hold a large amount of auditory information, but it’s rapidly replaced by new incoming sounds.
- Function: Registers and retains sensory information long enough for it to be processed or transferred into short-term memory. Sensory memory acts as a buffer for incoming information from the environment.
- For studying: While studying, sensory memory helps you quickly glance at your notes and momentarily retain the information long enough for your brain to decide whether to focus on it further.
2. Short-Term Memory (STM)
- Including Working Memory
- Duration: Typically lasts about 15 to 30 seconds unless actively rehearsed.
- Capacity: Limited, often described as 7 ± 2 chunks.
- Function: Temporarily holds and processes information before it either decays or gets transferred to long-term memory. It is involved in tasks like recalling a phone number for a brief time.
- Example: When you’re reading a question and trying to keep it in mind while you think of the answer, that’s using short-term memory.
Working memory involves the active manipulation of information (e.g., mental math) and it is often categorized under short-term memory as an extension of its functions.
- Example: When doing a maths problem in your head, like adding numbers without paper, you’re using working memory.
3. Long-Term Memory (LTM)
- This incudes Semantic, Episodic & Procedural Memory
- Duration: Can last from minutes to a lifetime.
- Capacity: Virtually unlimited.
- Function: Stores information over extended periods, including facts (semantic memory), personal experiences (episodic memory), and skills (procedural memory).
- Example: Remembering your best friend’s name, your favorite song, or facts for a history test are all examples of long-term memory.
- For studying: When you review your notes and practice a lot, information moves from short-term to long-term memory, which is what you need for exams.
- Long term memory is like a library of everything you know.
How do we remember?
When trying to learn something for exams, there are also 3 stages involved in the process of remembering.
These different types of memory all play important roles in how we learn and remember. By understanding them, you can use study techniques that work best for each type—like using repetition for long-term memory, making personal connections for episodic memory, or practicing skills for procedural memory. The key is to engage your brain in different ways to strengthen these memories!
Every memory needs to be encoded, stored properly in order to be retrieved in exams.
The 3 stages of Memory
Encoding
This is the process of getting information into your brain. For studying, it’s like the different ways you can put information in your memory, such as by writing notes, listening to a teacher, or using flashcards.
Ecnoding in Sensory Memory:
This is the process of receiving raw sensory input (e.g., sights, sounds) and briefly registering it in its original form for further processing.
Ecnoding in Short-Term Memory:
Encoding happens quickly, like when you hear a phone number or see an image. This information is briefly held in sensory or short-term memory.
Encoding in Long-Term Memory:
Encoding is more complex and involves making connections with existing knowledge. Techniques like repetition, making associations, or using mnemonics help encode information into long-term memory.
- Encoding in Semantic Long-Term Memory:
Encoding focuses on understanding and organizing facts and general knowledge.
- Episodic in Episodic Long-Term Memory:
Encoding includes capturing details about personal experiences, including the time and place.
- Encoding in Procedural Long-Term Memory:
Encoding involves learning by doing, like practicing a skill repeatedly until it becomes automatic.
Storage
This is about how information is kept in your brain. Good storage means the information stays safe and organized, like keeping your books on a shelf where you can find them.
Storage in Sensory Memory:
Storage in sensory memory involves holding this sensory information for a very short period, typically lasting only milliseconds to a few seconds, before it either decays or transfers to short-term memory.
Storage in Short-Term Memory:
Information is stored temporarily, usually for seconds to minutes, and often requires attention to keep it active.
Storage in Long-Term Memory:
Storage involves more durable and organized systems, allowing information to be kept for years or even a lifetime.
- Storate in Semantic and Episodic Long-Term Memory:
Stored in different areas of the brain but often linked together; semantic memories are organized by meaning, while episodic memories are organized by time and context.
- Storage in Procedural long-Term Memory:
Stored in a way that allows you to perform tasks automatically, like riding a bike without thinking about it.
Retrieval
This is when you take information out of your memory when you need it, like when you answer questions in an exam.
Retrieval in Sensory Memory:
Retrieval from sensory memory is the brief and automatic recall of sensory information, often happening unconsciously before the memory fades or is passed on for more detailed processing.
Retrieval in Short-Term Memory:
Retrieval is straightforward, like recalling a number you just heard.
Retrieval in Long-Term Memory:
Retrieval can be complex and is often influenced by cues, context, and how well the information was encoded. It can sometimes be effortless, like remembering your birthday, or require effort, like recalling details for an exam.
- Retrieval in Semantic long-Term Memory:
Retrieval is about recalling facts and general knowledge, like answering trivia questions.
- Retrieval in Episodic long-Term Memory:
Retrieval brings up specific personal experiences, sometimes triggered by cues like smells, places, or sounds.
- Retrieval in Procedural long-Term Memory:
Retrieval happens automatically without conscious thought, like tying your shoe laces.
Summary
Encoding, storage, and retrieval are essential processes for all types of memory. They allow us to take in information, keep it, and use it when needed.
The details of how these processes work can vary depending on the type of memory (short-term, long-term, procedural, etc.), but they are fundamental to the functioning of all memories.
To do well in exams, it’s important to practice getting information into your long-term memory by using good study habits, like reviewing regularly, making connections between ideas, and using techniques like repetition and mnemonics (fun memory tricks).
