Table 1 Categories for classifying the research focus – overview

General characteristics of study

Methodology

-

• Quantitative

• Qualitative

• Mixed methods

Dependent variable (DV)

-

• Free text, summarized

Professional competence

Model of professional competence

Blömeke et al. (2015)

• Disposition

• Situation-specific

• Performance

Argumentation framework

Focal issues

Sampson and Clark (2008)

• Structure

• Content

• Justification

Argumentation competence based on analysis and assessment

Rapanta et al. (2013)

Analysis:

• Form

• Strategy

• Goal

Assessment:

• Metacognitive

• Metastrategic

• Epistemological