Data and Analysis Unit: EXE12
Last update: 2015-12-04 by Andy Wills
Unpublished categorization experiment (N = 17), identical to the procedure of Experiment 1B in Wills et al. (2009), with the exception that the observing key is on a FT 1s schedule.
The principal results are similar to Wills et al. (2009, Exp. 1B). Specifically, 2/17 participants failed to meet the Phase 1 and/or Phase 2 criterion, and 9/17 participants were classified as overall similarity responders in Phase 3.
This DAU contains raw data, and an analysis script, in open cross-platform formats
(see the file format notes)
Citation and License
At the present time these data are unpublished and hence confidential. On publication, they will be released on a Creative Commons Attribution ShareAlike 4.0 International License
- exe11clar.txt (2 KB) - Some clarifications of the Method and Results of Wills et al. (2009) Experiment 1B. The current experiment was identical, with the exception that the observingf key was on a FT 1s schedule (rather than FT 5s).
- exe11stims.tar.bz2 (705 KB) - Stimulus image files used in the current experiment and in Wills et al. (2009, Exp. 1B). Filenames are of the form 'A8----x.png', where '----' is the four-digit code used in the raw data file (see below). 'A8' is an irrelevant prefix, 'x' is an irrelevant single-digit suffix.
- exe12analysis.R (6 KB) - R script that performs the same analyses on the current data set as were performed on Wills et al. (2009, Exp. 1B).
- exe12data.csv (216 KB) - Trial-level behavioural raw data. Column headings are identical to those described for EXE11.
The following resources are not formally part of the archive because they do not use open formats. They are provided in case others find them useful, with absolutely no warranty!
- exe12param.tar.bz2 (3 KB) - Parameter files for the experiment program; to be replace the parameter files in source code provided in EXE11. The experimental program is otherwise the same as the one for EXE11.
- Wills, A.J., Lea, S.E.G., Leaver, L.A., Osthaus, B., Ryan, C.M.E., Suret, M.B., Bryant, C.M.L., Chapman, S.J., & Millar, L. (2009). A comparative analysis of the categorization of multidimensional stimuli: I. Unidimensional classification does not necessarily imply analytic processing; evidence from pigeons (Columba livia), squirrels (Sciurus carolinensis), and humans (Homo sapiens). Journal of Comparative Psychology, 123, 391-405.