Twenty Statements Test (TST)
The Twenty Statements Test (TST) is an instrument used to measure self concept. It was devised in 1954 by Manfred Kuhn & Thomas McPartland, with the aim of finding a standardized way to measure assumptions and self-attitudes. The test takes the form of a survey, with respondents asked to give up to twenty responses to the prompts, "Who am I?" or "I am..."; it is not mandatory that respondents give twenty answers.
The test usually only takes a few minutes. The test is unusual in utilising an open-question methodology, making coding non-straighforward. Kuhn (1960) has stated that responses to the twenty statements test should be grouped into five categories: social groups and classifications; ideological beliefs; interests; ambitions; and self-evaluations.
Attached and linked is documentation about the instrument.
Authors provide instrument validity and/or reliability information.