We believe in the open, rigorous, and scientific study of cognition. As such, we are working toward publicly posting as much of our published data as is possible. All studies with publicly posted data sets include a link with the reference listed below. If you don't see a link but would like access to a particular dataset, please email Dr. Ricker directly at Timothy.Ricker@usd.edu with your request. In most cases, the dataset can be formatted and posted relatively quickly.
For full-text pdfs of any article from our lab please email Dr. Ricker directly. Open-access publications include a link to article full texts in the references below.
Hebert, K.R. & Ricker, T.J. (2023). Reliability of the emotional experiences in activities of daily living scale (EEADLs). Occupational Therapy Journal of Research: Occupation, Participation and Health, 43, 271-279. https://doi.org/10.1177/15394492221085288
Sandry, J., & Ricker, T.J. (2022). Motor speed does not impact the drift rate: A computational hierarchical Drift Diffusion approach to differentiate cognitive and motor speed. Cognitive Research: Principles and Implications, 7, 66. https://doi.org/10.1186/s41235-022-00412-7 Full TextDataset
Mui, M., Ruben, R.M., Ricker, T.J., Dobryankova, E., & Sandry, J. (2022). Ex-Gaussian analysis of simple response time and the relationship with brain morphometry in multiple sclerosis. Multiple Sclerosis and Related Disorders, 63, 103890. https://doi.org/10.1016/j.msard.2022.103890
Cotton, K. & Ricker, T.J. (2021). Working memory consolidation improves long-term memory recognition. Journal of Experimental Psychology: Learning, Memory, and Cognition, 47, 208-219.https://doi.org/10.1037/xlm0000954 Dataset
Vergauwe, E., Ricker, T.J., Langerock, N., & Cowan, N. (2019). What do people typically do between list items? The nature of attention-based mnemonic activities depends on task context. Journal of Experimental Psychology: Learning, Memory, and Cognition, 45, 779-794.https://doi.org/10.1037/xlm0000625
Ricker, T.J. & Sandry, J. (2018) The Relationship between Masking and Short-Term Consolidation during Recall from Visual Working Memory. Annals of the New York Academy of Sciences, 1424. 91-101. https://doi.org/10.1111/nyas.13641 Dataset
Ricker, T.J., Nieuwenstein, M., Bayliss, D.M. & Barrouillet, P. (2018). Working memory consolidation: Insights from studies on attention and working memory. Annals of the New York Academy of Sciences, 1424. 8-18. https://doi.org/10.1111/nyas.13633
Ricker, T.J. & Cowan, N. (2018). Cognitive load as a measure of capture of the focus of attention. In R. Zheng (Ed.), Cognitive Load Measurement and Application: A Theoretical Framework for Meaningful Research and Practice. New York, NY: Routledge.
Ricker, T.J. & Hardman, K.O. (2017). The nature of short-term consolidation in visual working memory. Journal of Experimental Psychology: General, 146, 1551-1573. https://doi.org/10.1037/xge0000346
Ricker, T.J., Thiele, J., Swagman, A.R., & Rouder, J. (2017). Recognition decisions from visual working memory are mediated by continuous latent strengths. Cognitive Science, 41, 1510–1532. https://doi.org/10.1111/cogs.12436 Dataset
Hardman, K.O., Vergauwe, E., & Ricker, T.J. (2017). Categorical working memory representations are used in delayed estimation of continuous colors. Journal of Experimental Psychology: Human Perception and Performance, 43, 30-54. https://doi.org/10.1037/xhp0000290
Ricker, T.J., Vergauwe, E., & Cowan, N. (2016). Decay theory of immediate memory: From Brown (1958) to today (2014). QuarterlyJournal of Experimental Psychology, 69, 1969-1995. https://doi.org/10.1080/17470218.2014.914546
Ricker, T.J., Vergauwe, E., Hinrichs, G.A., Blume, C.L., & Cowan, N. (2015). No recovery of memory when cognitive load is decreased. Journal of Experimental Psychology: Learning, Memory, and Cognition, 41, 872-880. https://doi.org/10.1037/xlm0000084
Cowan, N., Ricker, T.J., Clark, K.M., Hinrichs, G.A., & Glass, B.A. (2015). Knowledge cannot explain the developmental growth of working memory capacity. Developmental Science, 18, 132–145. https://doi.org/10.1111/desc.12197
2014 & Earlier
Ricker, T.J., Spiegel, L.R., & Cowan, N. (2014). Time-based loss in visual short-term memory is from trace decay, not temporal distinctiveness. Journal of Experimental Psychology: Learning, Memory, and Cognition, 40, 1510-1523. https://doi.org/10.1037/xlm0000018
Ricker, T.J. & Cowan, N. (2014). Differences in presentation methods in working memory procedures: A matter of working memory consolidation. Journal of Experimental Psychology: Learning, Memory, and Cognition, 40, 417-428. https://doi.org/10.1037/a0034301
Cowan, N., AuBuchon, A.M., Gilchrist, A.L., Ricker, T.J., & Saults, J.S. (2011). Age differences in visual working memory capacity: Not based on encoding limitations. Developmental Science, 14, 1066-1074. https://doi.org/10.1111/j.1467-7687.2011.01060.x.
Ricker, T.J. & Cowan, N. (2010). Loss of visual working memory within seconds: The combined use of refreshable and non-refreshable features. Journal of Experimental Psychology: Learning, Memory, and Cognition, 36, 1355-1368. https://doi.org/10.1037/a0020356