Random House £12.99
Review: Impulse - Why We Do What We Do Without Knowing, By Dr David Lewis
Won't get fooled again? Yes, you will
Sunday 12 May 2013
It is a fascinating quirk of human nature that a major portion of our mental activity occurs at a level inaccessible to our conscious selves. Freud distinguished between the conscious, unconscious, and preconscious; the Buddha characterised the unconscious as an unruly grey elephant and the conscious mind as its rider; and Dr David Lewis divides our mental activity into "System I" (for "impulsive") and "System R" (for "reflection") thinking.
System I thinking uses fixed mental sub-routines called heuristics in order to quickly categorise incoming sensory data and then respond accordingly. It is emotional and instinctual; it creates "gut feelings" and first impressions. It is also easily fooled and, as savvy marketeers and politicians know, easily manipulated.
System R thinking is rational and reflective, and gives us restraint and forward-planning as well as such wonders as literature. But what dozens of varied examples in Lewis's book all illustrate is that System I thinking – "our zombie brain's default mode" – takes precedence over System-R thinking, and is responsible for the majority of our everyday behaviours. System R thinking comes into play after the fact: "Only if asked why we spoke or acted as we did, do we engage System R thinking to try to come up with a sensible, or at least plausible explanation for our behaviour ... it serves as a PR department for the 'self', explaining, embellishing and justifying our actions."
Doubtless it is worthwhile, however disconcerting, to be mindful of the fact that we aren't as rational as we appear even to ourselves. It helps explain human failings from prejudice to addiction. Luckily, we live in an era in which the general reader attracted to the explanatory power of modern neuroscience is spoilt for choice. And Lewis is neither the first nor the most elegant writer to have described the same dichotomy.
Lewis gathers his supporting evidence from sources ranging from the social sciences' most seminal experiments, to a study he conducted himself on the Channel 4 programme Secret Eaters. But it isn't clear how much credence he expects us to apportion to each study, and it begins to seem as if every scrap of information, no matter how anecdotal, is grist to his mill. And the speed with which he skates over the surface of things can be disorienting.
Some of the book's more interesting anecdotes come from the world of marketing, where millions of pounds are spent researching ways to appeal directly to our System I brains. Indeed, Lewis is described by his own book's blurb as the "father of neuromarketing". Perhaps he has indirectly caused you to spend more money in a supermarket than you otherwise would have. If so, don't feel too bad if, this time, you do engage System R, and interrogate the impulse to buy his book.
elephant appealThe first 23 lots in our charity auction have now gone. But there are 22 more still up for grabs
musicPolice chief rejects rappers' claims that his work is as dangerous as law enforcement or military service
comedy'Fresh Meat' star sees off stiff competition from Alan Carr, David Mitchell, Graham Norton, Lee Mack and Sarah Millican to win top prize
healthJames Bond's alcohol consumption puts him at 'high risk' of cirrhosis, tremors... and impotence
Beatles rush out 'bootleg' album to defy EU copyright law
Harvey Weinstein reveals his secret weapon on-set
Now that an oil trader's drinking has got him sacked, will we all have to make do with an afternoon latte?
Chiwetel Ejiofor and Idris Elba get nods for Best Actor, which no black Brit has ever won
Geoffrey Macnab reviews The Desolation of Smaug - the meat in Peter Jackson's Hobbit sandwich
Arts & Ents blogs
Jack Whitehall crowned king of British Comedy Awards
The Hobbit: The Desolation Of Smaug review
MasterChef: The Professionals 2013 - Steven Edwards, Adam Handling and Scott Davies are the final three
MasterChef: The Professionals 2013 - Steven Edwards crowned winner
Kanye West is as 'misguided as they come': Ohio police chief rejects rapper's claims that his work is as dangerous as law enforcement or military service
- 1 French café starts charging extra to rude customers
- 2 Sun will 'flip upside down' within weeks, says Nasa
- 3 Australia incest case: Deformed children found in remote farming community after generations of inbreeding
- 4 Physicists discover 'clearest evidence yet' that the Universe is a hologram
- 5 Fox News presenter tells viewers it is a 'fact' that both Jesus and Santa Claus are white
- < Previous
- Next >