Editing Human intelligence (section)

===Brain training===
Attempts to raise IQ with [[brain training]] have led to increases on aspects related with the training tasks – for instance [[working memory]] – but it is yet unclear if these increases generalize to increased intelligence per se.<ref>{{multiref2
|1={{cite journal | first1 = Zach | last1 = Shipstead | first2 = Thomas S. | last2 = Redick | first3 = Randall W. | last3 = Engle | year = 2010 | title = Does Working Memory Training Generalize? | journal = [[Psychologica Belgica]] | volume = 50 | issue = 3–4 | pages = 245–276 | doi=10.5334/pb-50-3-4-245| doi-access = free }}
|2={{cite journal | last1 = Simons | first1 = Daniel J. | last2 = Boot | first2 = Walter R. | last3 = Charness | first3 = Neil | last4 = Gathercole | first4 = Susan E. | last5 = Chabris | first5 = Christopher F. | last6 = Hambrick | first6 = David Z. |  last7 = Stine-Morrow | first7 = Elizabeth A. L. | s2cid = 13729927 | year = 2016 | title = Do "Brain-Training" Programs Work? | journal = Psychological Science in the Public Interest | volume = 17 | issue = 3 | pages = 103–186 | doi = 10.1177/1529100616661983 | pmid = 27697851}} }}</ref>

A 2008 research paper claimed that practicing a dual [[n-back]] task can increase [[fluid intelligence]] (''g<sub>f</sub>''), as measured in several different standard tests.<ref>{{cite journal|last1=Jaeggi|first1=S. M.|last2= Buschkuehl|first2= M.|last3= Jonides|first3= J.|last4=Perrig|first4= W. J. |year=2008|title= Improving fluid intelligence with training on working memory|journal= [[Proceedings of the National Academy of Sciences]]|volume=105|number=19|pages=6829–6833 |doi=10.1073/pnas.0801268105 |pmid=18443283 |pmc=2383929 |doi-access=free }}</ref> This finding received some attention from popular media, including an article in ''[[Wired (magazine)|Wired]]''.<ref>{{cite journal|author-link=Alexis Madrigal|first=Alexis|last=Madrigal|url=https://www.wired.com/science/discoveries/news/2008/04/smart_software|title=Forget 'Brain Age:' Researchers Develop Software That Makes You Smarter|journal=[[Wired News|Wired]]|date=April 2008}}</ref> However, a subsequent criticism of the paper's methodology questioned the experiment's validity and took issue with the lack of uniformity in the tests used to evaluate the control and test groups.<ref>{{cite journal | last1 = Moody | first1 = D. E. | year = 2009 | title = Can intelligence be increased by training on a task of working memory? | journal = Intelligence | volume = 37 | issue = 4| pages = 327–328 | doi = 10.1016/j.intell.2009.04.005 }}</ref> For example, the progressive nature of [[Raven's Advanced Progressive Matrices]] (APM) test may have been compromised by modifications of time restrictions (i.e., 10 minutes were allowed to complete a normally 45-minute test).