R Dataset / Package psych / ability
On this Picostat.com statistics page, you will find information about the ability data set which pertains to 16 ability items scored as correct or incorrect.. The ability data set is found in the psych R package. Try to load the ability data set in R by issuing the following command at the console data("ability"). This may load the data into a variable called ability. If R says the ability data set is not found, you can try installing the package by issuing this command install.packages("psych") and then attempt to reload the data with library("psych") followed by data("ability"). Perhaps strangley, if R gives you no output after entering a command, it means the command succeeded. If it succeeded you can see the data by typing ability at the command-line which should display the entire dataset.
If you need to download R, you can go to the R project website. You can download a CSV (comma separated values) version of the ability R data set. The size of this file is about 50,129 bytes.
16 ability items scored as correct or incorrect.
16 multiple choice ability items 1525 subjects taken from the Synthetic Aperture Personality Assessment (SAPA) web based personality assessment project are saved as
A data frame with 1525 observations on the following 16 variables. The number following the name is the item number from SAPA.
16 items were sampled from 80 items given as part of the SAPA (http://sapa-project.org) project (Revelle, Wilt and Rosenthal, 2009; Condon and Revelle, 2014) to develop online measures of ability. These 16 items reflect four lower order factors (verbal reasoning, letter series, matrix reasoning, and spatial rotations. These lower level factors all share a higher level factor ('g').
This data set may be used to demonstrate item response functions,
In addition, the data set is a good example of doing item analysis to examine the empirical response probabilities of each item alternative as a function of the underlying latent trait. When doing this, it appears that two of the matrix reasoning problems do not have monotonically increasing trace lines for the probability correct. At moderately high ability (theta = 1) there is a decrease in the probability correct from theta = 0 and theta = 2.
The example data set is taken from the Synthetic Aperture Personality Assessment personality and ability test at http://sapa-project.org. The data were collected with David Condon from 8/08/12 to 8/31/12.
Revelle, William, Wilt, Joshua, and Rosenthal, Allen (2010) Personality and Cognition: The Personality-Cognition Link. In Gruszka, Alexandra and Matthews, Gerald and Szymura, Blazej (Eds.) Handbook of Individual Differences in Cognition: Attention, Memory and Executive Control, Springer.
Condon, David and Revelle, William, (2014) The International Cognitive Ability Resource: Development and initial validation of a public-domain measure. Intelligence, 43, 52-64.
data(ability) #not run # ability.irt <- irt.fa(ability) # ability.scores <- score.irt(ability.irt,ability)
Dataset imported from https://www.r-project.org.
How To Register With a Username
How To Register With Google Single Sign On (SSO)
How To Login With a Username and Password
How To Login With Google Single Sign On (SSO)
How To Import a Dataset
How To Perform Statistical Analysis with Picostat
How To Use Educational Applications with Picostat
|Recent Queries For This Dataset|
No queries made on this dataset yet.
|Title||Authored on||Content type|
|R Dataset / Package MASS / Pima.tr2||March 9, 2018 - 1:06 PM||Dataset|
|OpenIntro Statistics Dataset - ipod||August 9, 2020 - 12:25 PM||Dataset|
|R Dataset / Package boot / frets||March 9, 2018 - 1:06 PM||Dataset|
|R Dataset / Package HSAUR / CYGOB1||March 9, 2018 - 1:06 PM||Dataset|
|OpenIntro Statistics Dataset - COL||August 9, 2020 - 2:30 PM||Dataset|