Description
Compare event age with a supplied recall window.
Consumer-study records can describe exposure, recall, option availability and purchase-value bases. Local record arithmetic preserves a supplied study or billing convention without measuring preferences, establishing memory accuracy or determining consumer rights.
Compare event age with a supplied recall window.
When to use this tool
Use Recall Window Age Offset when checking a supplied consumer-record, recall-window, choice or basket convention.
How to use the tool and how it works
- Enter eventAt, interviewAt, windowLength. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read age, boundaryOffset, withinWindow. Inspect withinWindow before interpreting the associated values.
Compare event age with a supplied recall window. Require windowLength >= 0; age = interviewAt-eventAt, boundaryOffset = age-windowLength; withinWindow requires nonfuture event and age <= window.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| eventAt | Event At | Required. Finite number. |
| interviewAt | Interview At | Required. Finite number. |
| windowLength | Window Length | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| age | Age | Required. Finite number. |
| boundaryOffset | Boundary Offset | Required. Finite number. |
| withinWindow | Within Window | Required. Boolean. |
{
"input": {
"eventAt": 10,
"interviewAt": 25,
"windowLength": 20
},
"output": {
"age": 15,
"boundaryOffset": -5,
"withinWindow": true
}
}Limitations and assumptions
- A timestamp inequality does not establish memory accuracy, actual exposure or a validated recall instrument.
- 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.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use actual study data, validated measurement methods and applicable merchant/consumer rules for substantive behavioral or transaction conclusions.
References
Similar or alternative tools
- Purchase Recall Window Exposure
Return overlap of a recall interval with an observation window.
- Purchase Recall Source Gap
Compare recall timing with source-record creation.