...helping my brain gather more information to get more answers right, and to see more possible associations than would otherwise be the case.
Will we be smarter with computers that can do abstract thinking for us? Or will that exacerbate a potential problem?
This is a difficult question to answer because it is difficult to see just how this will evolve. Personally, I see this triumph of technology, if it occurs on a broad scale, as a rather astounding defeat of its inventors, don't you? I suppose our abstract thinking abilities will be substantially superseded by machines.
One can imagine a future when the machine is consistently relied on for the answer, and in which, outside of setting up the question, the human is relatively redundant in this process. Of course, one can also imagine quite a few other scenarios.
In general, the brain needs to learn, to reason, to act. Without it, it deteriorates. I assume that we brain scientists understand this with increasing clarity, and whatever else the information explosion contributes to humankind, we'll understand, with increasing clarity, what the average individual has to do to maintain lifelong "brain fitness".
How does your research on brain plasticity affect intelligence?
One can measure intelligence before and after intensive training in a variety of different forms (e.g. , with the tools that we've developed for school-age children and mature adults in their language, reading and cognitive abilities) and record very significant advances in those measures. We have been training 70- to 90-plus-year-olds to be more accurate aural-language receivers and language users. After 40 hours or so of training, the average trainee's cognitive abilities are rejuvenated by about 10 years, i.e., their performance on a cognitive assessment battery is like those of an average person who is 10 years younger.
Many individuals improve by 20 or 30 or more years in ability. Similar before-vs.-after effects have been recorded using basic cognitive measures in kids.
Is our brain still evolving, and can we do anything proactively to stay smart?
Culture is evolving, and that means that the challenges faced by brains are continuously changing and elaborating. Our brains are different. Different doesn't always mean better. Different can be worse.
Sure, we can and must do things to stay proactively "smart." We must exercise our brains as the learning machines that they are, and we must do this continuously through life. We must work hard to maintain our skills and abilities as accurate receivers and users of information from aural language, vision, body senses, movement control, etc.
With the help of many world neuroscientists, Posit Science is working as hard as possible to develop and apply brain fitness tools that can provide this crucial exercise. Brain fitness will be an important part of every future, well-organised life.
