This study investigates a recently developed model of spiritual intelligence in relation to the common mental health concerns of depression, anxiety, and substance use. Three-hundred and fifty-three undergraduate psychology students responded to the Spiritual Intelligence Self-Report Inventory, the Center for Epidemiologic Studies Depression Scale–Revised, the Generalized Anxiety Disorder-7, and the Drug, Alcohol, and Nicotine scale. We hypothesized spiritual intelligence would be negatively associated with the study’s mental health outcomes. A secondary aim was to examine the contributions of spiritual intelligence model components to mental health. Overall spiritual intelligence was not associated with anxiety, depression, or substance use. Examination of the relationships between spiritual intelligence components and mental health suggested this model lacks cohesiveness in relation to mental health. While the capacity to critically examine existential issues was associated with increased depression and anxiety, the ability to draw meaning and purpose from experience was associated with improvements in all mental health outcomes. These findings cast doubt on the construct of spiritual intelligence and suggest that existential thinking and the production of meaning may be closely related to mental health. Future research should explore differences in spiritual intelligence components and their associations with mental health among varying religious affiliations.

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In this paper, we examine similarities between Sigmund Freud’s tripartite theory of personality to foundational works across various religious and philosophical movements. First, conceptual similarities to the id, ego, and superego are illustrated through scriptural verses and commentators of Judaism, Christianity, and Islam. Next, elements of the tripartite theory in the Eastern religions of Buddhism, Hinduism, and Sikhism are explored. Finally, this Freudian theory is viewed in relationship to various philosophical works from Ancient Greece to modern day. We suggest these earlier tripartite approaches emanating from diverse religious and philosophical movements emerge as a broader universal understanding of man from which Freud could have profited in developing one of his most seminal theories.

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