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Method effects associated with negatively and positively worded items on the 12-item General Health Questionnaire (GHQ-12): results from a cross-sectional survey with a representative sample of Catalonian workers

J. Losilla, J. Tomás, J. Vives, 2019, BMJ Open.

Wording effects and the factor structure of the 12-item General Health Questionnaire (GHQ-12).

J. Losilla, J. Vives, Universitat Politècnica de València, 2014, Psychological assessment.