James Flynn of the University of Otago in New Zealand has undertaken long-term research into intelligence, so much so that the 'Flynn Effect' is the name given to the worldwide increase in intelligence since IQ tests were developed over a century ago. The reasons behind this increase are not fully understood, but are probably due to the complex interaction of numerous environmental factors such as enriched audio-visual stimulation, better - and more interactive - education methods, even good artificial lighting for longer hours of reading and writing. It is interesting that as developing nations rapidly gain these improvements to society and infrastructure, their average IQ shows a correspondingly rapid increase when compared to the already developed West and its more staid advancement.
Research suggests that while young children's IQ continues to increase in developed nations, albeit at a reduced rate, the intelligence of teenagers in these countries has been in slow decline over the past thirty years. What is more, the higher the income decile, the larger the decrease. This hints that the causes are more predominant in middle-class lifestyles; basically, family wealth equates to loss of IQ! Data for the UK and Scandinavian countries indicates that a key factor may be the development of consumer electronics, starting with VCRs, games consoles and home computers and now complemented by smart phones, tablets and social media. This would align with the statistics, since the drop is highest among children likely to have greatest access to the devices. So could it be true that our digital distractions are dumbing us down?
1) Time
By spending more time on electronic devices, children live in a narrower world, where audio-visual stimulation aims for maximum enjoyment with minimal effort, the information and imagery flying by at dizzying speed. This isn't just the AV presentation of course: digital content itself closely aligns to pop cultural cornerstones, being glamorous, gimmicky, transient and expendable. As such, the infinitesimally small gradations of social status and friendship that exist amongst children and teenagers requires enormous effort on their part to maintain a constant online presence, both pro-actively and reactively responding to their peers' (and role models') endless inanities.The amount of effort it would take to filter this is mind-boggling and presumably takes away a lot of time that could be much better spent on other activities. This doesn't have to be something as constructive as reading or traditional studying: going outdoors has been shown to have all sorts of positive effects, as described in Richard Louv's 2005 best-seller Last Child in the Woods: Saving Our Children From Nature-Deficit Disorder.
Studies around the world have shown that there are all sorts of positive effects, including on mood, by mere immersion in nature, not just strenuous physical activity. Whether humans have an innate need for observing the intricate fractal patterns of vegetation (grass lawns and playing fields have been found to be ineffective) or whether it's noticing the seemingly unorganised behaviour of non-human life forms, the Japanese government have promoted Shinrin-yoku or 'forest air bathing' as a counterbalance to the stresses of urbanised existence. It sounds a bit New Age, but there is enough research to back up the idea that time spent in the natural environment can profoundly affect us.
Meanwhile, other nations appear to have given in, as if admitting that their citizens have turned into digitally-preoccupied zombies. Last year, the Dutch town of Bodegraven decided to reduce accidents to mobile-distracted pedestrians by installing red and green LED strips at a busy road junction, so that phone users could tell if it was safe to cross without having to look up!
2) Speed
One obvious change in the past four decades has been in the increased pace of life in developed nations. As we have communication and information retrieval tools that are relatively instantaneous, so employers expect their workforce to respond in tune with the speed of these machines. This act-now approach hardly encourages in-depth cogitation but relies upon seat-of-the-pants thinking, which no doubt requires a regular input of caffeine and adrenaline. The emphasis on rapid turnaround, when coupled with lack of patience, has led to an extremely heavy reliance on the first page of online search results: being smart at sifting through other people's data is fast becoming a replacement for original thought, as lazy students have discovered and no doubt as many school teachers and university lecturers could testify.Having a convenient source of information means that it is easier for anyone to find a solution to almost anything rather than working something out for themselves. This can lead to a decline in initiative, something which separates thought leaders from everyone else. There is a joy to figuring out something, which after all is a key motivation for many STEM professionals. Some scientists and engineers have explained that being able to understand the inner workings of common objects was a key component of their childhood, leading to an obvious career choice. For example, New Zealand-based scientist and science communicator Michelle Dickinson (A.K.A. Nanogirl) spent her childhood dismantling and repairing such disparate household items as home computers and toasters, echoing Ellie Arroway, the heroine in Carl Sagan's novel Contact, who as a child repaired a defective valve radio before going on to become a radio astronomer.
Of course, these days it would be more difficult to repair contemporary versions of these items, since they are often built so that they cannot even be opened except in a machine shop. Laptops and tablets are prime examples and I've known cases where the likes of Microsoft simply replace rather than repair a screen-damaged device. When I had a desktop computer I frequently installed video and memory cards, but then how-to videos are ubiquitous on YouTube. The latest generation of technology doesn't allow for such do-it-yourself upgrades, to the manufacturer's advantage and the consumer's detriment. As an aside, it's worrying that so many core skills such as basic repairs or map navigation are being lost; in the event of a massive power and/or network outage due to the likes of a solar flare, there could be a lot of people stuck in headless chicken mode. Squawk!
3) Quality
While the World Wide Web covers every subject imaginable (if being of immensely variable quality), that once fairly reliable source of information, television, has largely downgraded the sometimes staid but usually authoritative documentaries of yesteryear into music promo-style pieces of infotainment. Frequently unnecessary computer graphics and overly-dramatic reconstructions and voice overs are interwoven between miniscule sound bites from the experts, the amount of actual information being conveyed reduced to a bare minimum.In many cases, the likes of the Discovery Channel are even disguising pure fiction as fact, meaning that children - and frequently adults - are hard-placed to differentiate nonsense from reality. This blurring of demarcation does little to encourage critical or even sustained thinking; knowledge in the media and online has been reduced to a consumer-led circus with an emphasis on marketing and hype. Arguably, radio provides the last media format where the majority of content maintains a semblance of sustained, informative discussion on STEM issues.
4) Quantity
The brave new world of technology that surrounds us is primarily geared towards consumerism; after all, even social media is fundamentally a tool for targeted marketing. If there's one thing that manufacturers do not want it is inquisitive customers, since the buzzwords and hype often hide a lack of quality underneath. Unfortunately, the ubiquity of social media and online news in general means that ridiculous ideas rapidly become must-have fads.Even such commodities as food and drink have become mired with trendy products like charcoal-infused juice, unpasteurised milk and now raw water, attracting the same sort of uncritical punters who think that nutrition gurus know what really constituted human diets in the Palaeolithic. The fact that some of Silicon Valley's smartest have failed to consider the numerous dangers of raw water shows that again, analytical thinking is taking a back seat to whatever is the latest 'awesome' and 'cool' lifestyle choice.
Perhaps then certain types of thinking are becoming difficult to inculcate and sustain in our mentally vulnerable teenagers due to the constant demands of consumerism and its oh-so-seductive delivery channels. Whether today's youth will fall into the viewing habits of older generations, such as the myriad of 'food porn' shows remains to be seen; with so much on offer, is it any wonder people spend entire weekends binge watching series, oblivious to the wider world?
The desire to fit into a peer group and not be left behind by lack of knowledge about some trivia or other, for example about the latest series on Netflix, means that so much time is wasted on activities that only require a limited number of thought processes. Even a good memory isn't required anymore, with electronic calendars and calculators among the simplest of tools available to replace brain power. Besides which, the transience in popular culture means there's little need to remember most of what happened last week!
Ultimately, western nations are falling prey to the insular decadence well known from history as great civilisations pass their prime. Technology and the pace of contemporary life dictated by it must certainly play a part in any decline in IQ, although the human brain being what it is - after all, the most complex object in the known universe - I wouldn't dare guess how much is due to them.
There are probably other causes that are so familiar as to be practically invisible. Take for instance background noise, both visual and aural, which permeates man-made environments. My commute yesterday offers a typical example of the latter sort, with schoolchildren on my train playing loud music on their phones that could be heard some metres away to the two building sites I walked by, plus a main road packed with vehicles up to the size of construction trucks. As a final bonus, I passed ten shops and cafes that were all playing loud if inane pop music that could be heard on the street, through open doors. Gone are the days of tedious elevator muzak: even fairly expensive restaurants play material so fast and loud it barely constitutes the term 'background music'. If such sensory pollution is everywhere, when do we get to enjoy quality cogitation time?
If you think that consumerism isn't as all-encompassing as I state, then consider that the USA spends more per year on pet grooming than it does on nuclear fusion research. I mean, do you honestly really need a knee-high wall-mounted video phone to keep in touch with your dog or cat while you're at work? Talking of which, did you know that in 2015 the Kickstarter crowdfunding platform's Exploding Kittens card game raised almost US$9 million in less than a month? Let's be frank, we've got some work to do if we are to save subsequent generations from declining into trivia-obsessed sheeple. Baa!
