This study by Marko et al. (2026) explores how auditory distractions—especially those with semantic meaning—interfere with the retrieval of information from semantic memory. Across four experiments, the researchers compared how people recall related (automatic) versus unrelated (controlled) words while exposed to different types of background sounds, including meaningless noise, reversed speech, and meaningful words. The findings show that meaningful auditory distractors significantly disrupt memory retrieval, particularly in tasks requiring inhibitory control (e.g., when participants must avoid giving the most obvious word associations). The results support an interference-by-process mechanism rather than simple attention capture—meaning that interference arises because distractors activate overlapping concepts in the brain’s semantic network, not just because they grab attention. The authors propose an “activation-suppression” framework, in which effective retrieval depends on both automatic spreading activation and active inhibition to suppress irrelevant meanings.
Key takeaways for faculty:
- Cognitive load and distraction: Meaningful background noise—like conversations or spoken words—can subtly but significantly impair students’ ability to retrieve and articulate information that requires active thinking or controlled recall.
- Task type matters: Simple, automatic recall tasks are less affected by distractions than those that demand deliberate control or creative responses. Faculty designing assessments or discussions should consider the type of cognitive retrieval they are fostering.
- Learning environment design: Minimizing semantic distractions (e.g., background speech in open classrooms or during online sessions) can improve focus, especially during higher-order reasoning tasks.
- Support for inhibitory control: Instruction that helps students practice cognitive inhibition—such as mindfulness, focused-attention exercises, or structured reflection—may enhance their ability to resist interference and retrieve knowledge effectively.
Overall, the paper highlights how seemingly minor background language can interfere with complex thought, underscoring the importance of controlled, low-distraction environments for deep learning and assessment
Read the full article online:
Marko, M., Kubinec, A., Zelenayová, V., & Riečanský, I. (2026). The impact of distractor processing on semantic memory retrieval: The role of interference-by-process and inhibition. Cognition, 266, 106314. https://doi.org/10.1016/j.cognition.2025.106314