Description Usage Format Details Source References Examples

This classic data set contains of intelligence-test scores from 301 children on 26 tests of cognitive ability.

The tests cover mental speed, memory, mathematical-ability, spatial, and verbal ability as listed below.

The data are also available in the MBESS package.

1 | ```
data("HS.ability.data")
``` |

A data frame comprising 301 observations on 22 variables:

`id`

student ID number (int)

`Gender`

Sex (Factor w/ 2 levels “Female” and “Male”)

`grade`

Grade in school (integer 7 or 8)

`agey`

Age in years (integer)

`agem`

Age in months (integer)

`school`

School attended (Factor w/2 levels “Grant-White” and “Pasteur”)

`addition`

A speed test of addition (numeric)

`code`

A speed test (numeric)

`counting`

A speed test of counting groups of dots (numeric)

`straight`

A speed test discriminating straight and curved capitals (numeric)

`wordr`

A memory subtest of word recognition

`numberr`

A memory subtest of number recognition

`figurer`

A memory subtest of figure recognition

`object`

A memory subtest: object-number test

`numberf`

A memory subtest: number-figure test

`figurew`

A memory subtest: figure-word test

`deduct`

A mathematical subtest of deduction

`numeric`

A mathematical subtest of numerical puzzles

`problemr`

A mathematical subtest of problem reasoning

`series`

A mathematical subtest of series completion

`arithmet`

A mathematical subtest: Woody-McCall mixed fundamentals, form I

`visual`

A spatial subtest of visual perception

`cubes`

A spatial subtest

`paper`

A spatial subtest paper form board

`flags`

A spatial subtest (also known as lozenges)

`paperrev`

A spatial subtest additional paper form board test (can substitute for paper)

`flagssub`

A spatial subtest additional lozenges test (can substitute for flags)

`general`

A verbal subtest of general information

`paragrap`

A verbal subtest of paragraph comprehension

`sentence`

A verbal subtest of sentence completion

`wordc`

A verbal subtest of word classification

`wordm`

A verbal subtest of word meaning

The data are from children who differ in grade (seventh- and eighth-grade) and are nested in one of two schools (Pasteur and Grant-White). You will see it in use elsewhere, both in R (`lavaan`

, and `MBESS`

), and in Joreskog (1969) reporting a CFA on the Grant-White school subject subset.

Some tests are alternate or substitute forms, e.g. `paperrev`

(a paper form board test) can substitute for `paper`

and `flagssub`

for the lozenges test `flags`

.

Holzinger, K., and Swineford, F. (1939).

Holzinger, K., and Swineford, F. (1939). A study in factor analysis: The stability of a bifactor solution. *Supplementary Educational Monograph*, no. **48**. Chicago: University of Chicago Press.

Joreskog, K. G. (1969). A general approach to confirmatory maximum likelihood factor analysis. *Psychometrika*, **34**, 183-202.

1 2 3 4 | ```
data(HS.ability.data)
str(HS.ability.data)
levels(HS.ability.data$school)
plot(flags ~ flagssub, data = HS.ability.data)
``` |

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