
der Proband
subject
A person who voluntarily takes part in a scientific study, experiment, or test; a test subject.
Für die psychologische Studie werden noch Probanden gesucht.
Subjects are still being sought for the psychological study.
subject
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subject
A person who voluntarily takes part in a scientific study, experiment, or test; a test subject.
Für die psychologische Studie werden noch Probanden gesucht.
Subjects are still being sought for the psychological study.
'Proband' comes from the Latin 'probandus' (the one to be tested). It is related to the German verb 'probieren' (to try) and the noun 'die Probe' (the sample/test). This helps you understand the meaning 'Versuchsperson' (test subject).
Die Probanden mussten verschiedene Aufgaben am Computer lösen.
The subjects had to solve various tasks on the computer.
'Proband' is a formal, technical term from science and research. In everyday language, you would more likely say 'Teilnehmer' (participant) or 'Testperson' (test person).
Die Ergebnisse der Studie werden anonymisiert und die Namen der Probanden nicht genannt.
The results of the study are anonymized, and the names of the subjects are not given.
The word is typically used in the context of scientific tests. Common combinations are 'Probanden für eine Studie suchen' (to look for subjects for a study), 'an einem Experiment teilnehmen' (to take part in an experiment), or 'eine Gruppe von Probanden testen' (to test a group of subjects).
Das Institut sucht Probanden für eine neue medizinische Untersuchung.
The institute is looking for subjects for a new medical study.
participant
Teilnehmer is the general term for a person who takes part in an activity. Proband specifically refers to a test subject in a scientific study, experiment, or test. In a study, the same person can therefore be both a Teilnehmer and, more specifically, a Proband.

Jeder Proband der Studie erhält danach das zu testende Medikament.
Afterward, every test subject in the study receives the medication being tested.
Jeder Teilnehmer der Studie füllt zuerst einen Fragebogen aus.
Every participant in the study fills out a questionnaire first.