This study was supported by a German Research Foundation grant to Shu-Chen Li, Hauke Heekeren, and Ulman Lindenberger for a subproject (Li 515/8) in the research group on Conflicts as Signals (DFG FOR 778). We thank our student research assistants and interns Kirsten Becker, Angelika Paul, Katja Breitenbach, Beate Czerwon, Minh Tam Luong, Carlos Picchioni, Viola Störmer, Natalie Trumpp, and Katja Zschenderlein for their valuable support during data collection.
A lifespan comparison of the reliability, test-retest stability, and signal-to-noise ratio of event-related potentials assessed during performance monitoring
Version of Record online: 30 OCT 2012
Copyright © 2012 Society for Psychophysiological Research
Volume 50, Issue 1, pages 111–123, January 2013
How to Cite
Hämmerer, D., Li, S.-C., Völkle, M., Müller, V. and Lindenberger, U. (2013), A lifespan comparison of the reliability, test-retest stability, and signal-to-noise ratio of event-related potentials assessed during performance monitoring. Psychophysiology, 50: 111–123. doi: 10.1111/j.1469-8986.2012.01476.x
- Issue online: 18 DEC 2012
- Version of Record online: 30 OCT 2012
- Manuscript Accepted: 16 AUG 2012
- Manuscript Received: 14 MAR 2012
- German Research Foundation
- Performance monitoring
The reliability, stability, and signal-to-noise ratio (SNR) of event-related potentials (ERPs) were investigated in children, adolescents, younger adults, and older adults in performance monitoring tasks. P2, N2, P3, and P2-N2 peak-to-peak amplitude showed high odd-even split reliabilities in all age groups, ranging from.70 to.90. Multigroup analyses showed that test-retest stabilities (across 2 weeks) of ERP amplitudes did not differ among the four age groups. In contrast, relative to adolescents and younger adults, SNRs were lower in children and older adults, with higher noise levels in children and lower signal power in older adults. We conclude that age differences in the SNR of stimulus-locked ERPs can be successfully compensated by the averaging procedure with about 40 trials in the average. However, age differences in baseline noise and split-half reliability should be considered when comparing age groups in single trial measures or time-varying processes with ERPs.