Are processing speed tasks biomarkers of cognitive aging?

Are processing speed tasks biomarkers of cognitive aging?

We examined the association between 5 processing speed measures and general cognitive ability in a large (>900) sample of relatively healthy men and women at age 70. The processing speed tests were the Wechsler Digit Symbol-Coding and Symbol Search, simple reaction time, 4-choice reaction time, and inspection time. To inquire whether the processing speed tasks might be biomarkers of cognitive a...

Accounting for Cognitive Aging 1 Running Head: Accounting for Cognitive Aging Accounting for Cognitive Aging: Context Processing, Inhibition or Processing Speed? in Press, Aging, Neuropsychology and Cognition

Age-related deficits in context processing were examined in relationship to two predominant theories of cognitive aging (the Inhibitory Deficit and Processing Speed Models). Older and younger adults completed a measure of context processing (AX-CPT task) as well as a computerized battery of inhibitory tasks: Stroop, garden path sentences, go no-go, and the stopsignal paradigm. Participants also...

Numerical processing for cognitive tasks

Youthful Processing Speed in Older Adults: Genetic, Biological, and Behavioral Predictors of Cognitive Processing Speed Trajectories in Aging

Objective: To examine the impact of genetic, inflammatory, cardiovascular, lifestyle, and neuroanatomical factors on cognitive processing speed (CPS) change over time in functionally intact older adults. Methods: This observational study conducted over two time points, included 120 community dwelling cognitively normal older adults between the ages of 60 and 80 from the University of California...

Biomarkers of Cognitive Training Effects in Aging

An increasing number of studies have relied on brain imaging to assess the effects of cognitive training in healthy aging populations and in persons with early Alzheimer's disease or mild cognitive impairment (MCI). At the structural level, cognitive training in healthy aging individuals has been associated with increased brain volume, cortical thickness, and density and coherence of white matt...