Is the IQ set in stone once we hit adulthood? ‘Yes it is’ used to be the received wisdom. A new meta-analysis challenges this view and gives hope to all of us who feel that mother nature should have endowed us with more IQ points. But is the training worth it?
Intelligence increases in adults
I have previously blogged about intelligence training with music (here). Music lessons increase your intelligence by round about 3 IQ points. But this has only been shown to work in children. A new paper shows that adults can also improve their IQ. Jacky Au and colleagues make this point based on one big analysis incorporating 20 publications with over 1000 participans. People did a working memory exercice, i.e. they trained the bit of their mind that holds information online. How? They did the so-called n-back task over and over and over again. Rather than explain the n-back task here, I just invite you to watch the video.
Increasing memory, increasing intelligence
Of course you cannot change your intelligence if you only do the task once. However, once you do this task several times a week over several weeks, your performance should increase, which shows that you trained your working memory. However, you will also improve on seemingly unrelated IQ tests. The meta-analysis takes this as a sign that actual intelligence increases result from n-back training. Working memory training goes beyond improvements on working memory tests alone.
So, the training is effective. It increases your intelligence by three to four IQ points. But is it efficient? You have to train for around half an hour daily, over a month. Such a training regime will have a considerable impact on your life. Are three to four IQ points enough to compensate for that?
— — —
Au, J., Sheehan, E., Tsai, N., Duncan, G., Buschkuehl, M., & Jaeggi, S. (2014). Improving fluid intelligence with training on working memory: a meta-analysis Psychonomic Bulletin & Review DOI: 10.3758/s13423-014-0699-x
— — —