ANT: ANT data

In ez: Easy Analysis and Visualization of Factorial Experiments

Description

Simulated data from then Attention Network Test (see reference below), consisting of 2 within-Ss variables (“cue” and “flank”), 1 between-Ss variable (“group”) and 2 dependent variables (response time, “rt”, and whether an error was made, “error”)

Usage

data(ANT)

Format

A data frame with 5760 observations on the following 10 variables.

subnum

a factor with levels 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

group

a factor with levels Control Treatment

block

a numeric vector

trial

a numeric vector

cue

a factor with levels None Center Double Spatial

flank

a factor with levels Neutral Congruent Incongruent

location

a factor with levels down up

direction

a factor with levels left right

rt

a numeric vector

error

a numeric vector

Author(s)

Michael A. Lawrence [e-mail]
Visit the ez development site at http://github.com/mike-lawrence/ez
for the bug/issue tracker and the link to the mailing list.

References

J Fan, BD McCandliss, T Sommer, A Raz, MI Posner (2002). Testing the efficiency and independence of attentional networks. Journal of Cognitive Neuroscience, 14, 340-347.

Examples

data(ANT)
head(ANT)
ezPrecis(ANT)

Example output

  subnum     group block trial     cue     flank location direction       rt
1      1 Treatment     1     1    None   Neutral       up      left 398.6773
2      1 Treatment     1     2  Center   Neutral       up      left 389.1822
3      1 Treatment     1     3  Double   Neutral       up      left 333.2186
4      1 Treatment     1     4 Spatial   Neutral       up      left 419.7640
5      1 Treatment     1     5    None Congruent       up      left 446.4754
6      1 Treatment     1     6  Center Congruent       up      left 338.9766
  error
1     0
2     0
3     0
4     0
5     0
6     0
Data frame dimensions: 5760 rows, 10 columns
             type missing values      min         max
subnum     factor       0     20        1          20
group      factor       0      2  Control   Treatment
block     numeric       0      6        1           6
trial     numeric       0     48        1          48
cue        factor       0      4     None     Spatial
flank      factor       0      3  Neutral Incongruent
location   factor       0      2     down          up
direction  factor       0      2     left       right
rt        numeric       0   5760 179.5972    657.6986
error     numeric       0      2        0           1

ez documentation built on May 2, 2019, 3:46 a.m.