Age-related increases in reaction time result from slower preparation, not delayed initiation
Robert M. Hardwick, Alexander D. Forrence, M. Gabriela Costello, Kathleen M. Zackowski, Adrian M. Haith
Abstract
Previous research argues that older adults have slower response times because they hesitate to react, favoring accuracy over speed. The present results challenge this proposal. We found the delay between the minimum time required to prepare movements and the self-selected time at which they initiated remained consistent at ∼90 ms from ages 21 to 80. We therefore suggest older adults' slower response times can be attributed to changes in their ability to process stimuli and prepare movements.
Topics & Concepts
Stimulus (psychology)PsychologyChoice reaction timePhysical medicine and rehabilitationMovement (music)AudiologyDevelopmental psychologyNeuroscienceCognitionCognitive psychologyMedicineAestheticsPhilosophyMotor Control and AdaptationNeural and Behavioral Psychology StudiesEEG and Brain-Computer Interfaces