biostudies-literatureBjornsen HNNorges Forskningsråd717https://www.ebi.ac.uk/biostudies/studies/S-EPMC5604188biostudies-literatureUnknown17(1)<h4>Background</h4>Mental health literacy (MHL), or the knowledge and abilities necessary to benefit mental health, is a significant determinant of mental health and has the potential to benefit both individual and public mental health. MHL and its measures have traditionally focused on knowledge and beliefs about mental -ill-health rather than on mental health. No measures of MHL addressing knowledge of good or positive mental health have been identified.<h4>Aim</h4>This study aimed to develop and validate an instrument measuring adolescents' knowledge of how to obtain and maintain good mental health and to evaluate the psychometric properties of the instrument. More specifically, the factor structure, internal and construct validity, and test-retest reliability were assessed.<h4>Methods<BMC public healthPositive mental health literacy: development and validation of a measure among Norwegian adolescents.PMC5604188238331Bjornsen HNMoksnes UKRingdal REspnes GAEilertsen MEBfalsePositive mental health literacy: development and validation of a measure among Norwegian adolescents.<h4>Background</h4>Mental health literacy (MHL), or the knowledge and abilities necessary to benefit mental health, is a significant determinant of mental health and has the potential to benefit both individual and public mental health. MHL and its measures have traditionally focused on knowledge and beliefs about mental -ill-health rather than on mental health. No measures of MHL addressing knowledge of good or positive mental health have been identified.<h4>Aim</h4>This study aimed to develop and validate an instrument measuring adolescents' knowledge of how to obtain and maintain good mental health and to evaluate the psychometric properties of the instrument. More specifically, the factor structure, internal and construct validity, and test-retest reliability were assessed.<h4>Methods<2017-01-01T00:00:00Z2017 Sep2026-07-15T22:19:47.931Z2026-07-09T10:19:21.891ZS-EPMC56041882892303110.1186/s12889-017-4733-6