Many parents spend thousands of dollars on computer-based training programs that claim to help children with ADHD succeed in the classroom and in peer relationships while reducing hyperactivity and inattentiveness. But a University of Central Florida researcher says parents are better off saving their hard-earned cash.

Psychology professor Mark Rapport's research team spent two years analyzing the data from 25 studies and found that those programs are not producing significant or clinically meaningful long-term improvements in children's cognitive abilities, academic performance or behavior.

"Parents are desperate for help," said Rapport, who runs the Children's Learning Clinic IV at UCF. "If they can afford it, they are willing to spend the money, and some parents even enroll their children in private schools because they offer these cognitive training programs. But there is no empirical evidence to show those investments are worthwhile."

Rapport initiated the study because many parents of children who have been evaluated at his clinic asked him whether they should invest in the programs. The study is featured in the December issue of Clinical Psychology Review.

His team analyzed published studies sponsored by the companies themselves as well as all independent published studies in the literature -- and he drew his conclusions based on analyzing "blinded" studies, meaning studies in which researchers and independent raters used objective measures and did not know which children were assigned to the cognitive training programs as opposed to an inactive placebo condition.

Working memory represents one of the most important core deficits in children with ADHD, and improvements in working memory are associated with improved academic performance, behavior, peer relationships and other intellectual abilities. Surprisingly, although a majority of the cognitive training programs claimed to train this important aspect of brain functioning, closer examination of their training exercises revealed that they actually train short-term memory.

Short-term memory stores information in mind for a brief interval, whereas working memory uses the stored information for accomplishing a wide range of cognitive tasks, such as reading comprehension, mental math, and multitasking.

Rapport said his conclusions do not mean that the computer-based programs cannot become a helpful tool for children with ADHD. If programs can be designed to focus on working memory, it is worth evaluating whether they can help children's cognitive abilities, academic performance and behavior, he said.