How this instrument works
The Subjective Happiness Scale (SHS) is a short psychological instrument published by Sonja Lyubomirsky and Heidi Lepper in 1999 to measure how happy a person generally considers themselves to be, independent of any single event or mood. It asks four questions, each answered on a 1-to-7 scale, and has been used and validated across many research samples since its publication as a compact, reliable measure of global subjective happiness.
Three of the four items ask directly how happy the respondent considers themselves, in general and relative to peers. The fourth item is reverse-worded — it describes an unhappy person and asks how much that description fits — so a high self-rating on that item (meaning 'not at all like me') is scored, on the 1-7 scale as presented, in the same direction as high ratings on the other three. The overall score is simply the mean of the four item ratings, so it always falls somewhere between 1 and 7.
This is a research-grade self-report instrument, not a diagnostic or clinical screening tool. No single score on the SHS is inherently 'good' or 'bad' in a medical sense, and a one-time result says less than tracking your own score over time or comparing it against a specific study's reported averages. If you are experiencing persistent low mood, loss of interest, or other symptoms that concern you, talk to a doctor or mental health professional — this scale does not assess or rule out depression or any other condition.
- Rate the first item, how happy you generally consider yourself, from 1 to 7.
- Rate the second item, how happy you consider yourself compared to most peers, from 1 to 7.
- Rate the third item, how much 'some people are generally very happy' describes you, from 1 to 7.
- Rate the fourth item, how much 'some people are not very happy' describes you, from 1 to 7.
- Read the Subjective Happiness Score, the simple average of all four ratings, on the 1-7 scale.
Worked example — ratings of 5, 6, 5, 6
Answering 5 on the first item, 6 on the second, 5 on the third, and 6 on the fourth gives a score of (5 + 6 + 5 + 6) / 4 = 5.5 — comfortably in the upper half of the 1-7 scale, indicating the respondent generally rates themselves as happier than average across all four questions.
By contrast, lower ratings of 2, 3, 2, and 3 average to (2 + 3 + 2 + 3) / 4 = 2.5, sitting in the lower part of the scale. Neither result is a diagnosis of anything — the scale is designed to place a general self-report of happiness on a consistent 1-to-7 number, most useful when compared against your own score at a different time or against a study's reported group averages, rather than read as a single verdict.
Questions
Is the Subjective Happiness Scale a diagnostic test?
No. It is a validated research instrument for measuring general subjective happiness, used widely in psychology research since its 1999 publication, but it does not diagnose depression, anxiety, or any other clinical condition. It measures self-reported happiness, not mental health status, and a low score is not itself a medical finding.
Why is one item worded differently from the other three?
The fourth item is intentionally reverse-worded — it describes an unhappy person and asks how much that fits you — as a standard psychometric technique to reduce the chance that respondents simply pick the same point on the scale for every question without reading it carefully. Lyubomirsky and Lepper account for this wording direction when the four items are combined into a single average score.
What does my score actually mean?
The score is the average of your four 1-7 ratings, so it falls somewhere between 1 and 7. There's no fixed cutoff on the SHS that marks someone as clinically happy or unhappy — the scale is more useful for comparing your own score across time, or against average scores reported in published research samples, than for treating any single number as a verdict.
Who created the Subjective Happiness Scale, and is it validated?
It was developed by psychologists Sonja Lyubomirsky and Heidi Lepper and published in Social Indicators Research in 1999, alongside reliability and construct-validation data across multiple samples. It has since been used in a large body of published happiness and wellbeing research, which is why this calculator reproduces the original 4-item format and simple-mean scoring rather than a modified version.
Can I use this score to track my happiness over time?
That's one of the more evidence-supported uses of a brief self-report scale like this one — retaking it periodically and comparing your own scores can show a trend more reliably than a single score can on its own. Keep in mind that day-to-day mood, recent events, and how you're feeling when you answer can all shift an individual score somewhat.
Should I use this instead of talking to a professional about how I feel?
No. This scale is a self-reflection and research tool, not a substitute for professional support. If you're experiencing persistent low mood, loss of interest in things you normally enjoy, or other symptoms that worry you, talk to a doctor or mental health professional — those are things this scale isn't designed to assess.
References
Read this first: This instrument computes a screening figure from population formulas — it is not a diagnosis, and it cannot see the whole picture a clinician can. Use it to inform a conversation, not to replace one.