Description
Return eligible looking-time share after exclusions and overlap correction.
Developmental research records may encode task eligibility, known responses, observer roles and withdrawal. A flag or support share describes supplied observations and does not independently assess a child, verify consent or establish a clinical interpretation.
Return eligible looking-time share after exclusions and overlap correction.
When to use this tool
Use Trial Looking Time Share when checking explicit developmental-study record and observation rules.
How to use the tool and how it works
- Enter targetDuration, visibleDuration, excludedDuration, targetExcludedOverlap. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read eligibleVisible, eligibleTarget, share, defined. Inspect defined before interpreting the associated values.
Return eligible looking-time share after exclusions and overlap correction. Require nonnegative durations, excluded <= visible, target <= visible, overlap <= min(target,excluded), and target-overlap <= visible-excluded. Divide eligibleTarget by eligibleVisible, otherwise zero with defined = false.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| targetDuration | Target Duration | Required. Finite number; minimum 0. |
| visibleDuration | Visible Duration | Required. Finite number; minimum 0. |
| excludedDuration | Excluded Duration | Required. Finite number; minimum 0. |
| targetExcludedOverlap | Target/excluded overlap duration; subtract once to obtain eligible target time. | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| eligibleVisible | Eligible Visible | Required. Finite number. |
| eligibleTarget | Eligible Target | Required. Finite number. |
| share | Dimensionless ratio on the explicitly stated numerator and denominator basis. | Required. Finite number. |
| defined | Whether the stated denominator is nonzero; inspect this before using the associated ratio. | Required. Boolean. |
{
"input": {
"targetDuration": 30,
"visibleDuration": 100,
"excludedDuration": 20,
"targetExcludedOverlap": 10
},
"output": {
"eligibleVisible": 80,
"eligibleTarget": 20,
"share": 0.25,
"defined": true
}
}Limitations and assumptions
- Supplied durations use one time unit; arithmetic support is not an attention or developmental diagnosis.
- 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 an approved study protocol and appropriate professional assessment for participant decisions, developmental interpretation or clinical questions.
References
Similar or alternative tools
- Trial Attention Support Share
Return attention-duration support within valid task observations.
- Child Task Valid Trial Proportion
Return task administration and validity fractions on distinct denominators.