Proactive interference is the concept of a diminishment in new learning because of previous learning of similar material. It is also referred to as proactive inhibition.
Proactive Interference in Psychology
When information from long-term memory obstructs the encoding or retrieval of fresh information, this is known as proactive interference. The strength of the previous memory trace or the similarity between the old and new information might both contribute to this interference.
The "trigram" experiment, in which participants were instructed to recall a group of three letters (such as "QWX") and then were instructed to count backwards in threes from a certain number to prevent rehearsing, is a classic illustration of proactive interference. Participants who had previously memorized other sets of letters were more likely to recall the incorrect letters when asked to recall them after a period of time. This occurred because the memory of the new set of letters was actively hampered by the previously remembered letters. (Bjork,1994).
When we need to remember a new phone number yet our memory is prejudiced toward an old phone number that we have previously memorized, this is an example of proactive interference in action.
Understanding the mechanisms of proactive interference can help individuals develop strategies to minimize interference and improve their ability to remember new information. These strategies may include increasing the distinctiveness of new information, reducing the similarity between old and new information, or spacing out learning sessions to prevent the buildup of proactive interference over time.
Proactive vs. Retroactive Interference
Proactive interference is often contrasted with retroactive interference, which occurs when new information interferes with the recall of previously learned information (McGeoch, 1932). For instance, if a person learns a second language and starts to forget words from their native language, retroactive interference is taking place. In summary, proactive interference affects the recall of new information, while retroactive interference affects the recall of old information.
History
Research on proactive interference dates back to the early 20th century. One of the earliest studies on the topic was conducted by who found that previously learned information could interfere with the recall of new information. Later, conducted a series of experiments on verbal learning, which provided substantial evidence for the existence of proactive interference. Since then, numerous studies have continued to investigate the factors influencing proactive interference, solidifying its status as an important concept in memory research.
How To Reduce Proactive Interference
Proactive interference can occur for various reasons, such as the similarity between old and new information or the context in which the information is learned. To reduce proactive interference, several strategies can be employed:
- Spacing learning sessions: Distributing learning sessions over time can help reduce proactive interference, as it allows for the consolidation of new information.
- Varying the context: Changing the context in which information is learned can reduce interference, as it helps create distinct mental associations
- Practicing retrieval: Actively recalling new information can strengthen memory and reduce the impact of proactive interference
References
Bjork, R. A. (1994). Memory and metamemory considerations in the training of human beings. In J. Metcalfe & A. P. Shimamura (Eds.), Metacognition: Knowing about knowing (pp. 185–205). The MIT Press.
McGeoch, J. A. (1932). Forgetting and the law of disuse. Psychological Review, 39(4), 352-370.
Thomson (Eds.), Memory in context: Context in memory (pp. 13-34). John Wiley & Sons. DOI: 10.1037/h0069819
