Music we like can be more distracting than music we don't

Music by Infernal: enjoyable but distracting 
Many of us like to listen to music while we work. It's become a ritual, alongside the coffee in our favourite mug. Previous research suggests this is probably no bad thing. In lab studies, people who listen to music they like, generally perform better at mental tasks afterwards, an effect that's been attributed to boosts in mood and arousal.

But what about the effect of background music that plays on during a task - more akin what we do in real life? This is actually less studied. The traditional mood-arousal literature would predict it to be beneficial too, especially if the music is to the listener's taste.

However, there's another line of research, known as the "Irrelevant Sound Effect", that's all about the way background sounds can interfere with our short-term memory for ordered lists, which would be a bad thing for many work-related tasks. These studies show that the distraction is greater when the sound is more acoustically varied - just like your typical pop song. Based on this, Nick Perham and Martinne Sykora made a counter-intuitive prediction - background music that you like will be more detrimental to working memory than unappealing music, so long as the liked music has more acoustical variation than the disliked music.

Twenty-five undergrads completed several serial recall tasks. They were presented with strings of eight consonants and had to repeat them back from memory in the correct order. Performance was best in the quiet condition, but the key finding was that particiants' performance was worse when they completed the memory task with a song they liked playing over headphones (Infernal's "From Paris to Berlin"), compared with a song they disliked (songs such as "Acid Bath" from the grind core metal band Repulsion). In case you're wondering, participants who liked Repulsion were excluded from the study.

The fast-tempo "extreme guitar-based" music of Repulsion, the researchers explained, is like "a cacophony of sound, in which the segmentation of each individual sound from the next is difficult to identify". This means it has less acoustic variation from one moment to the next, which helps explain why, even though disliked, it had a less detrimental effect on serial recall than Infernal's pop song.

Perham and Sykora said their findings were "seemingly incompatible with the mood and arousal literature, but are consistent with the changing-state explanation of the Irrelevant Sound Effect."

A further intriguing detail from the study is the participants' lack of insight into the degree of distraction associated with each type of music. Asked to judge their own performance, they determined correctly that their memory was more accurate in the quiet condition, but they didn't realise that their performance was poorest whilst listening to the music they liked.

So, the next time you're bothered by someone else's bad music, console yourself that the noise could be less harmful to your work performance than your own choice would be!

_________________________________ ResearchBlogging.org


Nick Perham and Martinne Sykora (2012). Disliked Music can be Better for Performance than Liked Music. Applied Cognitive Psychology DOI: 10.1002/acp.2826

Post written by Christian Jarrett for the BPS Research Digest.
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