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Rumination is one of the risk factors for mental health problems among nursing students. Rumination refers to repetitive thoughts focusing on negative emotions. There is a need to use an appropriate instrument to detect rumination to prevent the development of emotional problems. The ruminative response scale (RRS) is an instrument widely used to assess rumination levels in adult populations. It is inconclusive if the scale can be used for younger people like nursing students.

This study aimed to examine the psychometric properties of the 10-item ruminative response scale (RRS-10) in undergraduate nursing students.

A cross-sectional research design was used.

This study was undertaken at one of the universities in Thailand.

A sample of 747 undergraduate nursing students was recruited.

Data were collected through a self-administered questionnaire …