Posts Tagged ‘Washingtn Post’

Brain Training Games in Perspective

July 23, 2017

In the July 11, 2017 issue of the Washington Post there was an article by Jenna Gallegos titled “Brain training games fail to deliver exceptional cognitive boost, study finds”. This article summarized a study published in the Journal of Neuroscience in which 128 young adults were tested for mental performance after playing either Luminosity brain-training games or regular video games for 10 weeks. Researchers saw no evidence that commercial brain training games lead to improvements in memory, decision-making, sustained attention, or ability to switch between mental tasks.

So what can do these results mean? Luminosity might want to work on developing games that will show improvements in mental performance when compared against regular video games. Suppose that either the current study had or a future study will show improvements in mental performance when compared to regular video games. Although these results would be positive, they would not prove that playing them warded off dementia.

It is already known that cognitive activity does decrease the likelihood of dementia, and that cognitive activity can produce a cognitive reserve such that even when the defining characteristics of Alzheimer’s, the amyloid plaque and neurofibrillary tangles, appear dementia might be delayed or forestalled altogether. After all, there have been autopsies performed on people whose brains were plagued with amyloid plaque and neurofibrillary tangles who never exhibited any cognitive or behavioral symptoms of the disease.

The healthy memory blog has warned against waiting for drugs that prevent or cure Alzheimer’s (see the healthy memory blog post, “The Myth of Alzheimer’s). The healthy memory blog does recommend a healthy lifestyle that features growth mindsets for continually learning and meditation and mindfulness. Social activities are also an important part of this healthy lifestyle.

HM also argues that it is not just mental activity, but the type of mental activity that is important. Here it is important to understand the different types of cognitive activity Daniel Kahneman described in his book “Thinking Fast and Slow.”

System 1 is named Intuition. System 1 is very fast, employs parallel processing, and appears to be automatic and effortless. This processing is so fast that it is executed, for the most part, outside conscious awareness. Emotions and feelings are also part of System 1. Learning is associative and slow. For something to become a System 2 process much repetition and practice is required. Activities such as walking, driving, and conversation are primarily System 1 processes. They occur rapidly and with little apparent effort. We would not have survived if we could not do these types of processes rapidly. But this speed of processing is purchased at a cost, the possibility of errors, biases, and illusions.
System 2 is named Reasoning. It is controlled processing that is slow, serial, and effortful. It is also flexible. This is what we commonly regard as thinking. One of the roles of System 2 is to monitor System 1 for processing errors, but System 2 is slow and System 1 is fast, so errors do slip through. Learning, particularly the early stages, are largely a System 2 process.

System 1 processing occurs rapidly over frequently travelled pathways in the brain. However, System 2 processing involves traveling over many pathways, some which are little used to find supporting, refuting, or conflicting information, or in establishing new links for learning

It is HM’s conjecture that it is System 2 processing that is most beneficial to healthy memories, the formation of a cognitive reserve, and the forestalling or prevention of dementia.

So what types of experiments could test this hypothesis. Here are two possibilities;

One hypothesis is that voters who voted for Trump engaged primarily, if not exclusively ,in System 1 processing. and are more likely to suffer from dementia. Many, if not most, decisions were based on emotions, which are System 1 processes. Other decisions where based on religion or party affiliation. So these people were essentially just following orders. Even if people gave an answer such as jobs or the economy, did they bother to think critically how Trump promised to accomplish his promises, or were they just placing blind faith in Trump?

So the argument here is that voters who did not vote for Trump engaged in System 2 processing that kept them from making the error of voting for Trump. Consequently, they have healthier memories and are less likely to safer from dementia.

Another hypothesis is that viewers of Fox News are more likely to suffer from demential. Fox’s “Fair and Balanced” news is accomplished by presenting news that appeals to existing biases and beliefs. This enables Fox viewers to use System 1 processes almost exclusively and to avoid or minimize System 2 thinking.

But what about viewers who do not view Fox news? As they receive a wider range of views in the news coverage, some, but not all, of the news will require System 2 processing. In other words, these viewers will need to think more, which might well assist in building a cognitive reserve and warding off dementia.

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