• Macho Siegfried

• Macho Siegfried

Content and rationale of the lecture:

- Basic approach: Discussion of psychometric concepts, like psychometric models or criteria of the quality of measures [e.g. reliability, validity], from the perspective of modern psychometrics.

-  A unified treatment of classical test theory and probabilistic test theory (item response theory).

-  A thorough understanding of psychometric concepts as well as the restrictions underlying traditional psycho-metric measures.

- Sophisticated methods to estimate psychometric models and compute unbiased measures (e.g. of reliability and validity of tests).

Requirements:

- Basic knowledge of the program R.

- Willingness to learn the relevant functions of R-packages (like lavaan) and the toolboxes to perform the psycho-metric analyses (Detailed instructions are provided).

- Willingness to do the exercises that consist predominately in computations using the packages.

- Specific knowledge about psychometric concepts that you may have acquired in your test theory lecture (like test-retest reliability or Cronbach’s a) are not required since these will be treated in great detail, from the perspective of old and new psychometrics.

A complete manuscript as well as the slides of the single lectures are available on GFRI. By consequence, your presence in the course is not obligatory.