According to Keyes's mental health continuum that categorizes mental health into four quadrants, the upper left quadrant is occupied by those with:

Appeared in: BTSC Staff Nurse 1 August-2025

Explanation

Keyes's model uses two axes: mental health (well-being) and mental illness.
The vertical axis represents mental health, with 'optimal' at the top.
The horizontal axis represents mental illness, with 'absence' on the left.
Therefore, the upper-left quadrant corresponds to individuals with optimal mental health and an absence of mental illness.
This state is also referred to as 'flourishing'.

Why Other Options Were Wrong

Option A: This describes the lower-left quadrant of Keyes's model, a state known as 'languishing,' where an individual has low well-being but no formal mental illness diagnosis.
Option B: This describes the upper-right quadrant, a state known as 'struggling,' where an individual maintains high well-being despite having a diagnosed mental illness.
Option D: This describes the lower-right quadrant, a state known as 'floundering,' where an individual has both a diagnosed mental illness and low levels of well-being.

Related Visual

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Keyes's Two-Continua Model of Mental Health as background academic context rather than a clinical decision trigger.
This model guides nurses to perform a holistic mental health assessment, looking beyond just the presence or absence of a psychiatric diagnosis.
It highlights the importance of promoting well-being (e.g., through positive psychology interventions, building resilience) as a key nursing role, even for patients without a mental illness (languishing) or those who are managing an illness well (struggling).
What if? If a patient with depression (mental illness present) reports a strong sense of purpose and positive relationships (optimal mental health), the nurse's approach would shift from solely managing symptoms to also supporting and reinforcing these strengths to help the patient remain in the 'struggling' quadrant and move towards 'flourishing'.

How to Approach the Question

First, identify the core concept: Keyes's mental health continuum.
Recall or visualize the model's structure. It's a 2x2 grid, not a single line.
Identify the two axes: one for mental health (from poor to optimal) and one for mental illness (from absent to present).
Determine the standard orientation: typically, optimal health is at the top, and absence of illness is on the left.
Locate the 'upper left' position on this grid. This intersection represents 'optimal mental health' and 'absence of mental illness'.
Match this description to the given options.

Concept Tested & Keywords

Concept Tested: Keyes's Two-Continua Model of Mental Health
Stem keywords: Keyes's mental health continuum, four quadrants, upper left quadrant
Lead-in keywords: BEST, MOST RELEVANT CLUE
Negative lead-in flag: false

Question ID

Q_0HQC69htQMoVFYjzS0j6

Reference Book

E6 Robert Boland, Marcia L. Verduin - Kaplan and Sadock's Comprehensive Text of Psychiatry-Wolters Kluwer Health (2024) (pp 1-16525 of 16525) p. 9421-9423

E6 Kaplan Sadock's Synopsis of Psychiatry-2022 (pp 1-3768 of 3768) p. 3431-3433

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