Working memory is our ability to store and manipulate information for a brief time. It is typically measured by dual-tasks, where the individual has to remember an item while simultaneously processing a sometimes unrelated piece of information. A widely used working memory task is the reading span task where the individual reads a sentence, verifies it, and then recalls the final word. Individual differences in working memory performance are closely related to a range of academic skills such as reading, spelling, comprehension, and mathematics. Crucially, there is emerging research that working memory predicts learning outcomes independently of IQ. One explanation for the importance of working memory in academic attainment is that because it appears to be relatively unaffected by environmental influences, such as parental educational level and financial background, it measures a student’s capacity to acquire knowledge rather than what they have already learned.

However little is known about the consequences of low working memory capacity per se, independent of other associated learning difficulties. In particular, it is not known either what proportion of students with low working memory capacities has significant learning difficulties or what their behavioral characteristics are. The aim of a recent study published in Child Development (reference below) was to provide the first systematic large-scale examination of the cognitive and behavioral characteristics of school-aged students who have been identified solely on the basis of very low working memory scores.

In screening of over 3000 school-aged students in mainstream schools, 1 in 10 was identified as having working memory difficulties. There were several key findings regarding their cognitive skills. The first is that the majority of them performed below age-expected levels in reading and mathematics. This suggests that Read the rest of this entry »

Over the next weeks we are going to be sharing the Executive Summary of our market report The State of the Brain Fitness Software Market 2008 with members and clients of several partner organizations (the British Columbia Seniors Living Association, where I will be speaking this Thursday, Neurotech Reports, where I will speak on October 24th, and the Health 2.0 conference, where we are sponsoring a panel on gaming for health), so it is only fair that we first share it with our own readers.

Executive Summary

A spate of recent global news coverage on brain fitness and brain training reflects a growing interest in natural, non drug-based interventions to keep our brains sharp as we age. This interest is very timely, given an aging population, increasing prevalence of Alzheimer’s rates, and soaring health care costs in the US that place more emphasis than ever on prevention and lifestyle changes.

US brain fitness market: significant and growing

We estimate the size of the US brain fitness market was $225m in 2007 – more than double what it was in 2005. Whereas K12 school systems were the largest buyers in 2005, consumers were responsible for most of the growth from 2005 to 2007. We estimate that the consumer segment grew from a few million in 2005 to $80m in 2007, and foresee significant market growth driven not only by consumers but also by healthcare and insurance providers.

Market dynamics

As we speak to diverse audiences about this emerging field around the country we are frequently asked the following questions:

- Why are we talking about the brain fitness field at all?

Over the past decade, teams backed by neuroscientists around the world Read the rest of this entry »