This site has been archived. It is no longer being updated, but still contains a wealth of reports on cognitive and brain research, providing the evidence-based foundations for the articles on Mempowered, and my books. For more up-to-date reporting, and most particularly, for more user-friendly advice about improving your memory, or dealing with cognitive problems, go to Mempowered.
Memory Problems
A German study involving 1,936 older adults (50+) has found that mild cognitive impairment (MCI) occurred twice as often in those diagnosed with type 2 diabetes.
In my book on remembering intentions, I spoke of how quickly and easily your thoughts can be derailed, leading to ‘action slips’ and, in the wrong circumstances, catastrophic mistakes.
We know that stress has a complicated relationship with learning, but in general its effect is negative, and part of that is due to stress producing anxious thoughts that clog up working memory. A new study adds another perspective to that.
Strategies
I’ve reported often on the perils of multitasking. Here is yet another one, with an intriguing new finding: it seems that the people who multitask the most are those least capable of doing so!
I reported recently on how easily and quickly we can get derailed from a chain of thought (or action).
Here’s an encouraging study for all those who think that, because of age or physical damage, they must resign themselves to whatever cognitive impairment or decline they have suffered.
Aging
Evidence is accumulating that age-related cognitive decline is rooted in three related factors: processing speed slows down (because of myelin degradation); the ability to inhibit distractions becomes impaired; working memory capacity is reduced.
Recent research has suggested that sleep problems might be a risk factor in developing Alzheimer’s, and in mild cognitive impairment.
I’ve written before about the gathering evidence that sensory impairment, visual impairment and hearing loss in particular, is a risk factor for age-related cognitive decline and dementia.
How Memory Works
Our life-experiences contain a wealth of new and old information. The relative proportions of these change, of course, as we age. But how do we know whether we should be encoding new information or retrieving old information?
Here’s an intriguing study for those interested in how language affects how we think.
Study Skills
I’ve spoken before about the effects of motivation on test performance.
A study into how well students understand specific diagrams reminds us that, while pictures may be worth 1000 words, even small details can make a significant difference to how informative they are.
A meta-analysis of 242 articles assessing the math skills of 1,286,350 people found no difference between the two sexes.
Lifestyle
Another study looking into the urban-nature effect issue takes a different tack than those I’ve previously reported on, that look at the attention-refreshing benefits of natural environments.
Because sleep is so important for memory and learning (and gathering evidence suggests sleep problems may play a significant role in age-related cognitive impairment), I thought I’d make quick note of a recent review bringing together all research on the immediate effects of alcohol on the sleep
Organophosphate pesticides are the most widely used insecticides in the world; they are also (according to WHO), one of the most hazardous pesticides to vertebrate animals.