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Control panel

This is your control panel to set options, select metrics and for data up- and download.

Select Metric

Example Data

File Upload

You can upload a csv file with data. Please make sure to only upload the data which you want to have used for theta estimation! Items must be named accordingly to the metric item names. Additional columns not matching any item name are discarded (except a column named 'id' if existent).

Prior Selection

Estimation Method

! EAP Sum Score Estimation is only available when data is exactly one measure from metric.

! For comparison of precision with legacy instruments select ML estimation!

Download File Options

Below are the measures included in the chosen metric and the respective item codes. It is crucial that item codes in the data matches those item codes exactly. Please refer to the respective publication.

Please check whether your uploaded data has been recognized correctly. You should see a table with some rows of all available items.
Data sent through the internet is at risk to become public. Please upload only the required amount of data (in other words, only the item responses). Data should not contain any personal information, allowing tracing of single responses to individuals.

These are the item parameters used in estimation:

Descriptive statistics for theta.

Distribution of the latent trait estimates.

Please check decimal and cell separators!

Download the data with latent trait estimates here .