Reaction Time

Tests of reaction time indicate a decline in the processing of information among adults age 40 and older, and that the more complex the required processing, the larger the age differences in processing time (Columbia, 1998). However, in real world terms these differences represent about 10 seconds difference and are not clinically detectable. Many of the abilities in which declines occur can be improved through training and practice in memory techniques, problem-solving skills, and other cognitive strategies. Short-term memory loss is common and determining whether "forgetfulness" is benign or a precursor of dementia is often impossible. The average 70 year old can take up to 4 times longer than a 20 year old in tests involving basic memory skills (Moody, p.406). Older adults are also slower in reaction time than younger adults as is clearly shown by the declines in the speed of information processing.