Table 1.
A description of the source and year of the articles in our core data set.
| 2005a | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | Total: | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| The Sun | – | 10 | 7 | 6 | 8 | 3 | 4 | 1 | 2 | 3 | 44 |
| The Guardian | – | 15 | 11 | 6 | 9 | 2 | 3 | – | 3 | 6 | 55 |
| The Observer | – | 4 | 4 | 4 | 2 | 2 | 2 | 1 | 1 | 1 | 21 |
| Daily Telegraph | – | 3 | 16 | 7 | 6 | 15 | – | 1 | 3 | 2 | 53 |
| Daily Mail | – | 4 | 7 | 11 | 7 | 5 | 2 | 1 | 2 | 2 | 41 |
| Mail on Sunday | – | 1 | – | 1 | – | 2 | – | – | – | – | 4 |
| Times | – | 9 | 13 | 18 | 10 | 6 | 2 | 2 | 2 | 1 | 63 |
| Sunday Times | – | 4 | 8 | 5 | 4 | 4 | 2 | 1 | – | – | 28 |
| The Mirror | – | 2 | 5 | 6 | 7 | 5 | 2 | – | – | – | 27 |
| Total: | - | 52 | 71 | 64 | 53 | 44 | 17 | 7 | 13 | 15 | 336 |
a
The only article on brain training in 2005 is one that is part of our contextualising dataset, and does not mention computerized brain training games.