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Understanding Interference: Proactive and Retroactive Interference Explained

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0

E

Erica

10/7/2025

Psychology

Explanations for forgetting: Interference

992

Oct 7, 2025

2 pages

Understanding Interference: Proactive and Retroactive Interference Explained

Interference theory explains forgetting due to conflicting information in memory. ... Show more

Memory
A01
Interference theory
Interference occurs when two pieces of information conflict, resulting in forgetting
Types of interference
Pr

Real-Life Applications and Further Studies

Baddeley and Hitch's Rugby Player Study (1977)

This study aimed to compare interference and time as explanations for forgetting in a real-life context.

Procedure:

  • Rugby players were asked to recall the names of teams they had played against during the season.
  • Some players hadn't participated in all matches.

Results:

  • Recall depended on the number of matches played, not how long ago the matches occurred.

Highlight: This study demonstrates that interference theory can be applied to everyday situations, not just laboratory settings.

Time Between Learning and Interference Effects

Most laboratory experiments on interference are designed to maximize the possibility of interference occurring. However, this may not accurately represent real-world memory processes:

  1. In lab settings, the entire learning and recall process might occur within an hour.
  2. In real life, there's often a longer time gap between learning and recall.

Overcoming Interference with Cues

Tulving and Psotka's study (1971) provided important insights into how interference effects might be mitigated:

  • They found that when given cues, participants could recall more words, even if interference had previously occurred.

Example: If you're trying to remember a specific birthday party from your childhood, being shown photos from that day (cues) might help you recall details that were previously forgotten due to interference from memories of other birthday parties.

This finding suggests that while interference can cause forgetting, providing appropriate cues can help overcome these effects and improve memory recall.

Vocabulary: Retrieval cues are stimuli that help in recalling stored information from memory.

In conclusion, while the interference theory of forgetting provides valuable insights into memory processes, it's important to consider both its strengths in laboratory settings and its applications in real-life scenarios. The theory highlights the complex nature of memory and forgetting, emphasizing the role of similarity and the potential for overcoming interference through effective cueing strategies.

Memory
A01
Interference theory
Interference occurs when two pieces of information conflict, resulting in forgetting
Types of interference
Pr

Interference Theory and Its Types

Interference theory is a key concept in memory psychology that explains how conflicting information can lead to forgetting. This theory identifies two main types of interference:

  1. Proactive interference: This occurs when old memories interfere with the recall of newer memories.

  2. Retroactive interference: This happens when new memories disrupt the recall of older memories.

Definition: Interference theory of forgetting posits that forgetting occurs due to competing memories interfering with each other during recall.

The effects of similarity play a crucial role in interference. Research has shown that interference is more pronounced when memories are similar to each other.

Example: The McGeoch and McDonald study (1931) demonstrated that participants had the worst recall when learning synonyms, illustrating how similar information can cause greater interference.

McGeoch and McDonald's Study (1931)

This landmark study on interference involved the following procedure:

  1. Participants learned a set of words to 100% accuracy.
  2. They then learned another set of words, with different groups learning different types of words:
    • Group 1: Synonyms
    • Group 2: Antonyms
    • Group 3: Unrelated words
    • Group 4: Consonant syllables
    • Group 5: 3-digit numbers
    • Group 6: No new list (control group)

Highlight: The study found that recall was worst for the group that learned synonyms, demonstrating that interference is strongest when memories are similar.

Evaluation of Interference Theory

While interference theory has substantial support from laboratory studies, it also faces some criticisms:

  1. Many experiments use artificial materials, which may not reflect real-life memory processes.
  2. Lab experiments often maximize the possibility of interference, which may not represent everyday situations.
  3. The theory supports the existence of separate acoustic and visual memory stores.

Vocabulary: Acoustic store refers to the auditory component of short-term memory, while visual store relates to the visual aspect of short-term memory.



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Stefan S

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This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

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Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

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iOS user

I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️

Thomas R

iOS user

Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades

Brad T

Android user

Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend

Aubrey

iOS user

Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀

Marco B

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!

Paul T

iOS user

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️

Thomas R

iOS user

Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades

Brad T

Android user

Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend

Aubrey

iOS user

Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀

Marco B

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!

Paul T

iOS user

 

Psychology

992

Oct 7, 2025

2 pages

Understanding Interference: Proactive and Retroactive Interference Explained

Interference theory explains forgetting due to conflicting information in memory. Proactive interference occurs when old memories disrupt new ones, while retroactive interferenceinvolves new memories interfering with old ones. The theory emphasizes the impact of similarity on memory recall and... Show more

Memory
A01
Interference theory
Interference occurs when two pieces of information conflict, resulting in forgetting
Types of interference
Pr

Sign up to see the contentIt's free!

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Real-Life Applications and Further Studies

Baddeley and Hitch's Rugby Player Study (1977)

This study aimed to compare interference and time as explanations for forgetting in a real-life context.

Procedure:

  • Rugby players were asked to recall the names of teams they had played against during the season.
  • Some players hadn't participated in all matches.

Results:

  • Recall depended on the number of matches played, not how long ago the matches occurred.

Highlight: This study demonstrates that interference theory can be applied to everyday situations, not just laboratory settings.

Time Between Learning and Interference Effects

Most laboratory experiments on interference are designed to maximize the possibility of interference occurring. However, this may not accurately represent real-world memory processes:

  1. In lab settings, the entire learning and recall process might occur within an hour.
  2. In real life, there's often a longer time gap between learning and recall.

Overcoming Interference with Cues

Tulving and Psotka's study (1971) provided important insights into how interference effects might be mitigated:

  • They found that when given cues, participants could recall more words, even if interference had previously occurred.

Example: If you're trying to remember a specific birthday party from your childhood, being shown photos from that day (cues) might help you recall details that were previously forgotten due to interference from memories of other birthday parties.

This finding suggests that while interference can cause forgetting, providing appropriate cues can help overcome these effects and improve memory recall.

Vocabulary: Retrieval cues are stimuli that help in recalling stored information from memory.

In conclusion, while the interference theory of forgetting provides valuable insights into memory processes, it's important to consider both its strengths in laboratory settings and its applications in real-life scenarios. The theory highlights the complex nature of memory and forgetting, emphasizing the role of similarity and the potential for overcoming interference through effective cueing strategies.

Memory
A01
Interference theory
Interference occurs when two pieces of information conflict, resulting in forgetting
Types of interference
Pr

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Interference Theory and Its Types

Interference theory is a key concept in memory psychology that explains how conflicting information can lead to forgetting. This theory identifies two main types of interference:

  1. Proactive interference: This occurs when old memories interfere with the recall of newer memories.

  2. Retroactive interference: This happens when new memories disrupt the recall of older memories.

Definition: Interference theory of forgetting posits that forgetting occurs due to competing memories interfering with each other during recall.

The effects of similarity play a crucial role in interference. Research has shown that interference is more pronounced when memories are similar to each other.

Example: The McGeoch and McDonald study (1931) demonstrated that participants had the worst recall when learning synonyms, illustrating how similar information can cause greater interference.

McGeoch and McDonald's Study (1931)

This landmark study on interference involved the following procedure:

  1. Participants learned a set of words to 100% accuracy.
  2. They then learned another set of words, with different groups learning different types of words:
    • Group 1: Synonyms
    • Group 2: Antonyms
    • Group 3: Unrelated words
    • Group 4: Consonant syllables
    • Group 5: 3-digit numbers
    • Group 6: No new list (control group)

Highlight: The study found that recall was worst for the group that learned synonyms, demonstrating that interference is strongest when memories are similar.

Evaluation of Interference Theory

While interference theory has substantial support from laboratory studies, it also faces some criticisms:

  1. Many experiments use artificial materials, which may not reflect real-life memory processes.
  2. Lab experiments often maximize the possibility of interference, which may not represent everyday situations.
  3. The theory supports the existence of separate acoustic and visual memory stores.

Vocabulary: Acoustic store refers to the auditory component of short-term memory, while visual store relates to the visual aspect of short-term memory.

We thought you’d never ask...

What is the Knowunity AI companion?

Our AI companion is specifically built for the needs of students. Based on the millions of content pieces we have on the platform we can provide truly meaningful and relevant answers to students. But its not only about answers, the companion is even more about guiding students through their daily learning challenges, with personalised study plans, quizzes or content pieces in the chat and 100% personalisation based on the students skills and developments.

Where can I download the Knowunity app?

You can download the app in the Google Play Store and in the Apple App Store.

Is Knowunity really free of charge?

That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.

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The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️

Thomas R

iOS user

Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades

Brad T

Android user

Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend

Aubrey

iOS user

Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀

Marco B

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!

Paul T

iOS user

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

I think it’s very much worth it and you’ll end up using it a lot once you get the hang of it and even after looking at others notes you can still ask your Artificial intelligence buddy the question and ask to simplify it if you still don’t get it!!! In the end I think it’s worth it 😊👍 ⚠️Also DID I MENTION ITS FREEE YOU DON’T HAVE TO PAY FOR ANYTHING AND STILL GET YOUR GRADES IN PERFECTLY❗️❗️⚠️

Thomas R

iOS user

Knowunity is the BEST app I’ve used in a minute. This is not an ai review or anything this is genuinely coming from a 7th grade student (I know 2011 im young) but dude this app is a 10/10 i have maintained a 3.8 gpa and have plenty of time for gaming. I love it and my mom is just happy I got good grades

Brad T

Android user

Not only did it help me find the answer but it also showed me alternative ways to solve it. I was horrible in math and science but now I have an a in both subjects. Thanks for the help🤍🤍

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

I found this app a couple years ago and it has only gotten better since then. I really love it because it can help with written questions and photo questions. Also, it can find study guides that other people have made as well as flashcard sets and practice tests. The free version is also amazing for students who might not be able to afford it. Would 100% recommend

Aubrey

iOS user

Best app if you're in Highschool or Junior high. I have been using this app for 2 school years and it's the best, it's good if you don't have anyone to help you with school work.😋🩷🎀

Marco B

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This app is phenomenal down to the correct info and the various topics you can study! I greatly recommend it for people who struggle with procrastination and those who need homework help. It has been perfectly accurate for world 1 history as far as I’ve seen! Geometry too!

Paul T

iOS user