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Tags: Psychology , Psychometrics
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Depressive symptoms are patterns of mood, thinking, and physical change noticed over the last two weeks. The Beck Depression Inventory II organizes these experiences into short statements you can rate so the result reflects how you are doing.

You provide one response for each of the 21 items using four levels from not at all to severe. The score shows a band of severity alongside brief pointers you can consider for next steps.

A realistic reading might show higher scores on energy and sleep with lower scores elsewhere, and the summary would note a somatic pattern with gentle suggestions. Small changes in sleep or routine can shift the score even when mood feels similar.

For clearer comparisons over time, use the same recall window and answer all items without skipping. If a statement does not fit perfectly, choose the closest description rather than leaving it blank.

This screen cannot diagnose depression and it is not a crisis service. This tool provides informational estimates and does not substitute professional advice.

Technical Details:

The assessment summarizes self‑reported depressive symptoms across a two‑week recall. A total score S accumulates item ratings on an additive scale, then maps that result to a categorical band for interpretation.

Each item is rated on an integer scale from 0 to 3 where higher values indicate greater symptom presence. Items are partitioned into a cognitive subscore C and a somatic subscore M, which describe emphasis in thoughts versus bodily experience.

The relative gap between C and M supports a simple pattern note. A difference of 3 points or more favors the higher domain; smaller gaps are treated as mixed and described as balanced.

Severity bands indicate typical ranges. Values close to a boundary should be read cautiously and compared across time, context, and functioning.

S = ∑ i=1 21 vi
C= ∑ i=1 13 vi , M= ∑ i=14 21 vi
Symbol Meaning Unit/Datatype Source
vi Item response for item i integer 0–3 Input
S Total score across 21 items integer 0–63 Derived
C Cognitive subscore (items 1–13) integer 0–39 Derived
M Somatic subscore (items 14–21) integer 0–24 Derived
r Encoded responses string string, 21 chars Input (URL)
Worked example.
S= 8×2+ 6×1+ 7×0 =22
C=12,M=10

A total of 22 falls in the moderate band; the small gap between subscores reads as mixed.

S≤13 ⇒ Minimal 14≤S≤19 ⇒ Mild 20≤S≤28 ⇒ Moderate S≥29 ⇒ Severe
Band Lower Upper Implication
Minimal 0 13 Few or no depressive symptoms reported.
Mild 14 19 Symptoms present; monitor and consider self‑care.
Moderate 20 28 Meaningful symptoms; consider discussing support options.
Severe 29 63 Strong symptoms; a professional evaluation is recommended.

Validation & bounds extracted from code

Field Type Min Max Step/Pattern Error Text Placeholder
Item response integer 0 3 step 1 — —
Total score S integer 0 63 step 1 — —
Encoded string r string 21 chars 21 chars ^[0-3\-]{21}$ Ignored if invalid —

I/O formats & encoding

Input Accepted Families Output Encoding/Precision Rounding
21 item ratings On‑screen selections; optional URL code r Total S, band, subscores C and M, summary integers only not applicable
Answer exports Clipboard or document download Tabular answers plain text or document not applicable

Units, precision & rounding policy

All computations use whole numbers with no decimal rounding. Progress is shown as a whole‑percent display.

Networking & storage behavior

Processing is browser‑based and responses are kept on the device. A charting library is loaded from a content network to render the gauge; if unavailable, the assessment still runs without the chart. Optional copies you choose to make are generated on the device.

Security considerations

Inputs are constrained to fixed choices and encoded as digits, and generated summaries are built from predefined text. No secrets are required.

Assumptions & limitations

  • Self‑report can vary with context and recall.
  • Two‑week recall may not capture rapid shifts.
  • Band boundaries are discrete; near‑boundary results can feel unstable.
  • Subscores use items 1–13 for cognitive and 14–21 for somatic.
  • Pattern label uses a 3‑point gap; smaller gaps are treated as mixed.
  • Exports you choose to save may leave the device you control. Heads‑up
  • The summary offers general pointers, not individualized care plans.
  • Functioning and risk require broader clinical judgment beyond a single score.

Edge cases & error sources

  • Unanswered items prevent results until all 21 are selected.
  • Invalid r codes are ignored; defaults are applied.
  • Copy to clipboard can be blocked by device permissions.
  • Document export is disabled until all items are answered.
  • Chart rendering may be skipped if the library fails to load.
  • Very different sleep, illness, or stress can change scores independently of mood.
  • Refreshing or clearing the address bar resets state if the code is removed.
  • Back‑button navigation can restore a prior code and state.
  • Screen readers may announce the gauge as a number only.
  • Mobile keyboards are not used; selections are tap‑based.

Scientific/standards backing

The description and bands follow the Beck Depression Inventory II structure and scoring conventions as presented in the instrument manual and common clinical guidance for self‑report mood scales.

Privacy & compliance

No data is transmitted or stored server‑side. For sensitive concerns, follow local guidance and professional standards.

Step‑by‑Step Guide:

Beck Depression Inventory II scoring turns 21 item ratings into a total and bands.

  1. Start the assessment.
  2. Select one option for each of the 21 items.
  3. Use the question list to revisit any item if needed.
  4. Review the total, band, and subscores.
  5. Optionally copy or download your answers for your records.

Example: Selecting several moderate ratings and a few mild ratings often yields a moderate band with a mixed pattern.

Finish by noting context like sleep or major events so later runs are comparable.

FAQ:

What does the total mean?

It is the sum of all 21 ratings. The band labels the range to make interpretation straightforward across minimal, mild, moderate, and severe.

Scores summarize self‑report, not diagnosis.
How accurate is it?

Consistency improves when you use the same recall window, time of day, and conditions. Near a boundary, small shifts can change the band without a large change in experience.

Are cognitive and somatic separate?

Yes. Items 1 to 13 sum to a cognitive subscore and items 14 to 21 sum to a somatic subscore. The gap helps describe a pattern.

Is my data stored?

Responses stay on your device. If you copy or download answers, those files live where you save them.

Can I use it without a network?

Computation runs on the device. If the chart library is unavailable, the result still computes but the gauge may not render.

What does a borderline result mean?

Values near a boundary can move between bands on small changes. Track context and trends to make sense of movement.

How do I share or save my answers?

You can copy a summary or download a document of your selected options for personal records.

Is there a cost or license?

The implementation is distributed under the MIT License.

Troubleshooting:

  • Cannot select an option — ensure one choice per item.
  • Progress stuck — check for unanswered items in the list.
  • No chart shown — the chart library may not have loaded.
  • Copy fails — allow clipboard access and try again.
  • Download blocked — confirm file permissions on your device.
  • Shared link does not restore answers — the code may be incomplete or edited.

Advanced Tips:

  • Keep runs comparable by using the same time of day.
  • Note sleep, exercise, and major events alongside the score.
  • Look at the top scoring items to pick one small action.
  • Compare cognitive and somatic trends rather than a single day’s value.
  • Recheck after routine changes to see whether the pattern shifts.
  • Keep exported records in a secure location you control.

Glossary:

Item
One statement you rate from 0 to 3.
Total score S
Sum of all 21 item ratings.
Cognitive subscore C
Sum of items 1 to 13 emphasizing thoughts and mood.
Somatic subscore M
Sum of items 14 to 21 emphasizing body experience.
Band
A label that groups the total into a severity range.
Encoded string r
A 21‑character code of digits 0–3 or dashes for blanks.