Date of Award


Document Type


Degree Name

Doctor of Psychology (PsyD)


Graduate Department of Clinical Psychology

First Advisor

Rodger Bufford, PhD

Second Advisor

Kristie Knows His Gun, PsyD

Third Advisor

Ken Logan, PsyD


The Mood Disorder Questionnaire (MDQ) is a self-report screening instrument used to detect Bipolar Disorder (BD). Psychometric properties of Spanish translations of the MDQ are from communities where both language and cultural differences are present. A Spanish version of the MDQ not been validated among United States individuals who identify Spanish as their preferred language of communication.


We propose that the validation of a Castilian Spanish version of the MDQ is needed for cross-cultural adaptation, determining optimal cut-off scores, and as an aid to the literature on BD prevalence, specifically BD among Spanish speakers of the United States.


One hundred ten participants recruited through Qualtrics, completed the MDQ translated by Sanchez-Moreno et al. (2005) and answered demographic questions. Four subgroups were composed, including those who self-reported a diagnosis of Bipolar, Depression, Other mental health concern, and No mental health concern. These groups were compared for MDQ scores by analysis of covariance, controlling for demographics including age, biological sex, and years in the US.


Our sample concluded good internal consistency (α = .798). Analysis of covariance found that demographic variables did not predicted an MDQ score. A significant effect was found between groups (F4, 105 = 7.18; p < .001; eta2 = .215, 95% CI .070/.320; No Dx = Don’t know < BDP-I = BD-II = Other). An analysis of variance showed a significant difference between those who scored high (M = 9.35, SD = 2.15) and low (M = 2.72, SD = 2.11) on the MDQ, significant variance was met (F1, 108 = 231.7; p < .001; eta2 = .70, 95% CI .582/.747). Levene’s test showed that the variance was not equal F (3, 106) = 16.2, p < .001. Screening for bipolar diagnosis was accurate for 81.1% of, while classification for other was accurate for 66.7% (Eta = .519/Eta2 equals .269).


The MDQ translated by Sanchez-Moreno et al. (2005) showed similar psychometric properties of the original MDQ developed by Hirschfeld et al. (2000). Affirmation of seven hypomanic symptoms resulted in a good discriminative capacity for BD among United States patients who identify Spanish as their preferred language of communication.