estimate_wj: Estimate Woodcock-Johnson Letter-Word ID scores from ROAR-LDT...
In klintkanopka/roarscore: Estimating WJ LWID Scores from ROAR-LDT Scores
Description
Usage
Arguments
Value
Description
Estimates a variety of scores from ROAR-LDT responses. Function will only
consider item responses with precalibrated item parameters, but will handle
missing item responses gracefully. Models to estimate WJ scores depend on the
age of the respondent. If a 'visit_age' is not supplied for an individual,
their WJ columns will be populated with NA. Additionally, since all
respondents perform near ceiling and age is factored into the WJ standard
score, estimation is poorly behaved for older respondents.
Usage
1
estimate_wj(d)
Arguments
d
A dataframe with one row per respondent. Stimulii should be the
names of columns. To estimate WJ scores, must also include a 'visit_age'
column where age is measured in months (can be continuously valued).
Value
A dataframe with columns for subject code, IRT-estimated ROAR-LDT
ability score, estimated WJ-LWID scores (raw and standard), and estimated
WJ-LWID percentile.
klintkanopka/roarscore documentation built on Dec. 21, 2021, 7:38 a.m.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
Description Usage Arguments Value
Description
Estimates a variety of scores from ROAR-LDT responses. Function will only consider item responses with precalibrated item parameters, but will handle missing item responses gracefully. Models to estimate WJ scores depend on the age of the respondent. If a 'visit_age' is not supplied for an individual, their WJ columns will be populated with NA. Additionally, since all respondents perform near ceiling and age is factored into the WJ standard score, estimation is poorly behaved for older respondents.
Usage
1 | estimate_wj(d)
|
Arguments
d |
A dataframe with one row per respondent. Stimulii should be the names of columns. To estimate WJ scores, must also include a 'visit_age' column where age is measured in months (can be continuously valued). |
Value
A dataframe with columns for subject code, IRT-estimated ROAR-LDT ability score, estimated WJ-LWID scores (raw and standard), and estimated WJ-LWID percentile.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
Embedding an R snippet on your website
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.