Description
Measure a caregiver-report date's signed gap from an observation date.
Developmental research records separate actual observations, coder presence, task versions, response states, caregiver reports and exposure counts. Calendar age differs from developmental status, while a symbol match or parent-teacher rating gap is only a recorded comparison. Pseudonyms and supplied source labels do not themselves protect identity or validate evidence.
Measure a caregiver-report date's signed gap from an observation date.
When to use this tool
Use Caregiver Response Observation Date Gap when you already have observationDate, responseDate and need to measure a caregiver-report date's signed gap from an observation date.
How to use the tool and how it works
- Enter observationDate, responseDate. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read signedCalendarDays. Use the output convention below.
Parse real UTC dates; return responseDate-observationDate in calendar days.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| observationDate | Observation Date | Required. Text; maximum UTF-16 length 8192. Real proleptic Gregorian YYYY-MM-DD; four-digit years 0000-9999 accepted. |
| responseDate | Response Date | Required. Text; maximum UTF-16 length 8192. Real proleptic Gregorian YYYY-MM-DD; four-digit years 0000-9999 accepted. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| signedCalendarDays | Signed Calendar Days | Required. Safe integer. |
{
"input": {
"observationDate": "2026-10-28",
"responseDate": "2026-11-01"
},
"output": {
"signedCalendarDays": 4
}
}Limitations and assumptions
- Negative gaps are retained. No recall accuracy, event identity, suitable reporting window or developmental finding is established.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
Alternative or Complementary methods
Use the complete study or assessment method, observation records and context for developmental interpretation. Review task adaptations, reporter perspectives and data protection together; local counts, time gaps and status labels do not establish ability, diagnosis or suitable support.
References
Similar or alternative tools
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Calculate recorded age in elapsed calendar days on a testing date.
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Measure a birth date's signed distance from a supplied school-entry cutoff date.