What is the effect of increasing phonological similarity among items in a phonological loop task?

• A. Similarity has no effect.
• B. Increased phonological similarity among items typically reduces recall due to confusability.
• C. Similarity improves recall.
• D. Only affects long-term memory.

Answer: (B)

In the phonological loop, memory for verbal items relies on acoustic representations that are refreshed by rehearsal. When items sound similar, their phonemes overlap more, so they crowd the same representations. This makes it easy to mix items up or confuse their order, leading to more errors during recall. That increased confusability is the reason recall tends to drop as phonological similarity rises.

So, similarity isn’t helping memory and isn’t negligible; it creates interference within the phonological store and the rehearsal process, reducing how accurately you can recall the items. This effect is a hallmark of working memory for verbal material and is less about long-term memory.