http://jah.sagepub.com/content/25/8_suppl/65S.abstract?etoc
- Karlene K. Ball, PhD1
- Lesley A. Ross, PhD1
- David L. Roth, PhD2
- Jerri D. Edwards, PhD3
- 1University of Alabama at Birmingham, Birmingham, AL, USA
- 2Johns Hopkins University, Baltimore, MD, USA
- 3University of South Florida, FL, USA
- Karlene K. Ball, PhD, Department of Psychology, University of Alabama at Birmingham, 415 Campbell Hall, Birmingham, AL 35294-2100, USA. Email: kball@uab.edu
Abstract
Objectives: Cognitive training has
been shown to improve both cognitive and everyday abilities in older
adults; however, little is known
concerning the amount of training needed or the
characteristics of those who benefit. These analyses examined the
longitudinal
impact of dosage (number of training sessions) on
the improvement and maintenance of cognitive and everyday function. Methods: ACTIVE is a longitudinal, randomized, single-blind clinical trial evaluating cognitive interventions in older adults (aged
65-94) from six states in the United States. Results: Latent growth curve models indicated that initial training effects were maintained over 5 years and amplified by booster
sessions. A single booster session counteracted 4.92 months of age-related processing speed decline. Discussion:
Cognitive performance improved by 2.5 standard deviations for
participants who attended all 10 initial sessions and all 8
booster sessions compared to randomized
participants who attended none. Implications for the broader application
of cognitive
training interventions are discussed.
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