The Differences Between Prospective And Retrospective Memory

Medically reviewed by Paige Henry, LMSW, J.D.
Updated October 11, 2024by BetterHelp Editorial Team
Getty
Memory impairment can lead to complicated emotions

Have you ever told yourself to remember to turn the oven on at a certain time in the future and then do so? Or remembered that the oven needs to be at a certain temperature when you do turn it on? If so, you’ve utilized prospective and retrospective memory, respectively.

Prospective memory involves having the intention to remember something in the future, while retrospective memory involves remembering something from the past. Both types of memory have significant implications when it comes to our ability to function and live healthy, productive lives.

Below, we’re going to discuss prospective and retrospective memory, their characteristics, and how they differ. 

What is prospective memory?

Prospective memory is memory related to something that needs to be done in the future. It is a type of long-term memory that is responsible for remembering a planned event or intention. You use prospective memory frequently throughout each day. It is one of the most functional types of memory, and deficits in it can be especially damaging and frustrating.

Time-based prospective memory

You use time-based prospective memory when you want to do something at a specific time in the future. This type of prospective memory is often the first to fail in memory disorders. It requires attention and recollection of a set time; therefore, using it to store and recall information can be difficult. People tend to test lower on time-based prospective memory tests, regardless of whether they’ve experienced memory impairment.

Event-based prospective memory

Event-based prospective memory is at work when you want to do something at a point in the future and are reminded of an event. It can be a planned event, such as going to bed or eating a meal, or it can be an unplanned event, such as seeing your computer and remembering to write an email. This is a much more common type of prospective memory and one that is typically easier to utilize.

Prospective memory examples

When you have a planned event for the future, you are typically using your prospective memory when you remember it. Some examples of prospective memory include remembering to:

  • Watch a football game at a specific time
  • Go to a doctor's appointment 
  • Mow the yard when you see the lawnmower
  • Brush your teeth before bed
  • Take your medication with your meal
  • Charge your phone when you see a cable
  • Perform a specific task at work

What is retrospective memory?

Retrospective memory refers to the processing of knowledge of the past that you’ve gained through learning, experiencing, or other methods. Retrospective memory makes up the largest part of your long-term memory. When memory loss occurs, retrospective memory is usually greatly impacted. 

Getty/AnnaStills

Episodic memory

Episodic memory refers to remembering things you have done or that have happened to you throughout your life. Episodic memory includes autobiographical memory, such as remembering your wedding day, and memory of recent events, like what you ate for breakfast this morning.

Semantic memory

Semantic memory is your memory of facts and knowledge that you’ve learned throughout your life (e.g., knowing all the state capitals). When you remember sitting in class and your professor saying something specific about a topic, that is episodic memory. But when you don't recall the gaining of the information, just the information itself, that is semantic memory. 

Procedural memory

Procedural memory is your memory of how to do things. It is typically automatic and does not require specific recall. Procedural memory is responsible for helping you remember how to walk, talk, run, ride a bike, and drive a car. 

Retrospective memory examples

When you remember the knowledge you’ve gained or experiences you’ve had in the past, you’re utilizing retrospective memory. Some of the most common examples of retrospective memory include remembering:

  • Your wedding day
  • The birth of your child
  • That the capital of the United States is Washington, DC, and that it is different than Washington state
  • How to ride a bike when you have not done so in many years
  • How to drive a car
  • How to eat with a fork and knife

Prospective/retrospective memory and the brain

One of the biggest differences between prospective and retrospective memory is that they sometimes use different parts of the brain to operate. Therefore, some brain injuries and alterations may affect prospective memory but not retrospective memory, and vice versa. 

Prospective memory and the brain

Various regions of the brain are responsible for the processing of prospective memory. You make use of the frontal lobe, the parietal lobe, and the limbic system when you remember to perform future tasks through prospective memory. The frontal lobe is important because a certain amount of episodic and semantic memory is required to remember to perform—and to carry out—a task. Specifically, the prefrontal cortex section of the frontal lobe is directly involved in remembering event-based prospective memory. The prefrontal cortex is responsible for holding the memory of the intention and repressing conflicting thoughts. Research suggests that the prefrontal cortex is less important, however, to time-based prospective memory.

The parietal lobe is responsible for recognizing the cues that remind you to do something in the future. This is especially true when the cues are visual or spatial. The parietal lobe is primarily used to remember event-based prospective memory tasks (and less important for remembering time-based prospective memory tasks). When you remember to mail a letter because you saw a mailbox, your retrieval of that information is partly facilitated by the parietal lobe.

The parietal cortex is a brain region used in time-based prospective memory. People who have damage to this part of the brain are often unable to track time effectively to fulfill time-based prospective memory tasks. The limbic system is also important for prospective memory. Made up of the more primitive parts of the brain—including the hippocampus, the thalamus, and the anterior and posterior cingulate—it allows you to set and remember intentions. For example, the thalamus is activated when you recognize and act upon cues during some prospective memory tasks.

Retrospective memory and the brain

Like with prospective memory, our use of retrospective memory relies heavily on the hippocampus and the thalamus, as well as the prefrontal cortex. However, we also utilize the medial temporal lobe, the part of the brain important for the creation and retention of new memories, for retrospective memory. The amygdala is also a highly important brain structure for retrospective memory.

It is thought that the anterior temporal lobe plays an important role in our ability to recall information through semantic and episodic memory. Research suggests that the use of procedural memory is facilitated by the cerebellum, along with the frontal and parietal regions of the brain.  

Rawpixel
Memory impairment can lead to complicated emotions

Effects of aging

One of the effects of aging is the degradation of memory, but research suggests that age may not affect prospective and retrospective memory equally. In one study, when subjects young and old were tested for both prospective and retrospective memory, they found that age did not play as substantial a role in the ability to complete prospective memory tasks. On the other hand, aging was a significant factor in the ability to utilize retrospective memory for certain tests.

Effects of Alzheimer's disease

Alzheimer’s is a neurodegenerative disorder that typically leads to severe memory loss. Researchers have tested extensively to see what types of memory the disease affects. One study found that Alzheimer’s disease affects both prospective and retrospective memory equally. However, prospective memory loss is often the first type reported in people with Alzheimer's. 

Ability to retrain memory

Retrospective memory loss is often permanent and unable to be restored through training. When it comes to prospective memory, however, research has shown that it can be retrained and brought back to somewhat normal use. Researchers in one study trained people with Alzheimer’s disease to remember and complete a prospective memory task. After one week, the participants could again complete the task, even when it was slightly changed.

Online therapy for memory and mental health

Research shows that online therapy can help address memory impairment that may arise as a result of—or concurrently with—a mental health concern. For example, in one study, researchers found that online therapy could effectively improve memory retention in individuals who have a history of depression. The study specifically noted improvements in participants’ verbal working memory, a form of retrospective memory. 

If you’re living with memory loss, a related mental health condition, or other concerns, online therapy can help. With an online therapy platform like BetterHelp, you can easily schedule therapy appointments and receive frequent reminders of upcoming sessions, making it easier for you to remember them. Your therapist can also connect you with exercises and other resources that you can utilize to help reinforce concepts you’ve discussed and learn more about the role memory plays in your life.

Takeaway

Prospective and retrospective memory play important roles in our ability to function, and impairments in these forms of memory can impact almost every facet of life. If you’re struggling with memory loss or similar mental health-related challenges, consider reaching out to a licensed therapist online. With the support of a professional, you can address challenges related to your cognitive well-being and take the next step on your mental health journey.
Improve your memory with professional support
The information on this page is not intended to be a substitution for diagnosis, treatment, or informed professional advice. You should not take any action or avoid taking any action without consulting with a qualified mental health professional. For more information, please read our terms of use.
Get the support you need from one of our therapistsGet started