Subjective Happiness Scale (SHS)

Abstract

The Subjective Happiness Scale (SHS) is a brief, 4-item self-report questionnaire designed to measure an individual’s chronic or characteristic level of happiness. Unlike scales that focus on momentary mood or specific life satisfaction domains, the SHS assesses a global, subjective well-being evaluation. Developed by Sonja Lyubomirsky and Heidi Lepper, this instrument is widely used in positive psychology research due to its strong psychometric properties and ease of administration. The scale asks respondents to evaluate themselves using absolute ratings, social comparisons, and descriptive characterizations.

Keywords

Subjective Happiness Scale, SHS, Subjective well-being, positive psychology, global happiness, life satisfaction, psychological measure, self-report scale, psychological construct.

Authors

Sonja Lyubomirsky, Heidi Lepper

Purpose

The primary purpose of the SHS is to provide a quick, reliable, and valid assessment of an individual’s general, enduring sense of happiness. It moves beyond simple affective measures by asking respondents to characterize themselves relative to their peers and relative to generalized descriptions of happy and unhappy people.

The scale is intended for use in large-scale social science studies, clinical assessments, and positive psychology interventions where a robust, yet efficient, measure of global happiness is required. It captures the essence of how happy a person generally feels, viewing happiness as a stable disposition rather than a transient state.

Construct

The SHS measures the psychological construct of Subjective Well-being (SWB), specifically focusing on the cognitive and global self-appraisal component of happiness. The scale operationalizes happiness as a stable personality trait or disposition, allowing researchers to classify individuals as generally happy or unhappy over extended periods.

The four items utilize varied methods of subjective evaluation: Items 1 and 2 employ global self-ratings and social comparison, while items 3 and 4 use descriptive paragraphs detailing characteristically happy or unhappy individuals, ensuring the construct is measured comprehensively.

Validity

The SHS demonstrates strong evidence of construct validity, as established in its initial publication. It shows significant convergent validity through high correlations with numerous other established measures of well-being, including the Satisfaction With Life Scale (SWLS), measures of optimism, self-esteem, and extraversion.

Furthermore, the scale exhibits good discriminant validity, showing low correlations with constructs conceptually distinct from happiness, such as neuroticism or specific forms of psychopathology. This confirms that the SHS measures a unique dimension of positive functioning distinct from the mere absence of distress.

Reliability

The scale possesses high internal reliability. Across multiple studies and populations, the SHS has consistently yielded high Cronbach’s alpha coefficients, typically ranging from 0.79 to 0.94, suggesting strong internal consistency among the four items. This indicates that the items reliably measure the same underlying construct of global happiness.

The SHS also demonstrates good test-retest reliability over short and long intervals (e.g., correlations around r = 0.55 over four months), confirming that the scale captures a stable, characteristic level of happiness rather than temporary fluctuations in mood.

Factor Analysis

Both exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) conducted on the SHS consistently support a robust, single-factor structure. The four items load heavily onto one primary factor, confirming that the scale is essentially unidimensional and measures a unitary, global sense of happiness.

The simplicity of this strong single-factor solution is a major advantage of the SHS, as it permits researchers to calculate a single, easily interpretable mean score (the average of the four items, with Item 4 reverse-coded) to represent the respondent’s overall subjective happiness level.

Instrument

Test Type: Self-report scale (Psychometric measure)

Format: 4 items, 7-point Likert-type scales (anchors vary by item)

Language Available: English (originally), widely translated into numerous languages including Spanish, German, Japanese, and Chinese.

Population Group: General population (Non-clinical)

Age Group: Adolescents (14+) and Adults

Population Details: Has been validated across diverse student, community, and clinical samples globally, demonstrating cross-cultural utility.

Test Methodology: Respondents rate themselves on a 7-point continuum for four separate statements/questions. The items are averaged to produce a final score, with Item 4 being reverse-coded prior to calculation.

Keywords

Positive psychology, well-being measurement, self-appraisal, Lyubomirsky, Lepper, dispositional happiness, psychological construct, quality of life.

Authors

Author ORCID Identifier: N/A

Affiliation Email addresses: N/A

Correspondence Address: N/A

Permissions & Fee and Test Year

The Subjective Happiness Scale (SHS) is generally available for non-commercial academic research without charge, consistent with practices in positive psychology. Researchers should consult the primary author, Dr. Sonja Lyubomirsky, for formal permissions regarding commercial or large-scale applications. The scale was first formally published in 1999.

Reference’s

• Lyubomirsky, S., & Lepper, H. (1999). A measure of subjective happiness: Preliminary reliability and construct validation. Social Indicators Research, 46, 137-155. The original publication is available at www.springerlink.com.
• The original publication PDF summarizing the scale and its development can be accessed here: http://sonjalyubomirsky.com/wp-content/themes/sonjalyubomirsky/papers/LL1999.pdf
• The instrument itself, including scoring instructions, can be found online at: http://www.positivepsychology.org/subjectivehappinessscale.pdf

Items of the Subjective Happiness Scale (SHS)

IMPORTANT: The following scale items must be preserved in their original language and must not be changed in any way.