VisualArray {WMCapacity} | R Documentation |
Working memory visual array change detection responses
Description
This dataset contains the (cleaned) data which was analyzed in Rouder,
Morey, Cowan, Zwilling, Morey, and Pratte (2008).
Usage
data(VisualArray)
Format
A data frame with 12345 observations on the following 36 variables.
sub
- the subject number
blk
- the block number
trl
- the trial number within a block
prch
- the log-odds of a change trial within that block
N
- the visual array set size
ischange
- whether the array changed or not (1=changed)
resp
- whether the participant responded ``change'' (1=changed)
RT
- the response time
probesq
- which square number was probed
newcol
- the color of the probed square
c1
- the color of square 1
x1
- the x location of square 1
y1
- the y location of square 1
c2
- the color of square 2
x2
- the x location of square 2
y2
- the y location of square 2
c3
- the color of square 3
x3
- the x location of square 3
y3
- the y location of square 3
c4
- the color of square 4
x4
- the x location of square 4
y4
- the y location of square 4
c5
- the color of square 5
x5
- the x location of square 5
y5
- the y location of square 5
c6
- the color of square 6
x6
- the x location of square 6
y6
- the y location of square 6
c7
- the color of square 7
x7
- the x location of square 7
y7
- the y location of square 7
c8
- the color of square 8
x8
- the x location of square 8
y8
- the y location of square 8
cor
- whether the participant was correct or not
oldcol
- the color of the probed square in the study array
Details
Each trial consisted of a presentation of N colored squares in an
array, followed by a mask, and then a single square. The square was
either the same color or a different color than the one in the same
location in the first array. The participant responded ``change'' if
they believed the square was different.
Source
Rouder, J. N., Morey, R. D., Cowan, N., Zwilling, C. E., Morey, C. C. &
Pratte, M. S. (2008). An Assessment of Fixed-Capacity Models of Visual
Working Memory. Proceedings of the National Academy of Sciences, 105, 5976-5979.
Examples
data(VisualArray)
## Aggregated hit and false alarm rates
tapply(VisualArray$resp,list(VisualArray$ischange,
VisualArray$N,VisualArray$prch),mean)
[Package
WMCapacity version 0.9.1
Index]