Description
Return infant gaze share under an occlusion policy.
Developmental-study observations use explicit trial, age, stimulus and missing-data conventions. Counterbalance flags and observation shares describe supplied research records; they do not establish actual stimulus presentation, an age correction appropriate for clinical use or a developmental assessment.
Return infant gaze share under an occlusion policy.
When to use this tool
Use Infant Trial Valid Gaze Term when checking the stated child-study observation, timing or record convention.
How to use the tool and how it works
- Enter gazeDuration, trialDuration, occludedDuration, excludeOccluded. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read denominator, observedGazeShare. Use the output convention below.
Return infant gaze share under an occlusion policy. Require nonnegative gaze/occluded time, trialDuration > occludedDuration and gaze <= trial-occluded; denominator subtracts occlusion only when excludeOccluded, observedGazeShare = gaze/denominator.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| gazeDuration | Gaze Duration | Required. Finite number; minimum 0. |
| trialDuration | Trial Duration | Required. Finite number. |
| occludedDuration | Occluded Duration | Required. Finite number; minimum 0. |
| excludeOccluded | Exclude Occluded | Required. Boolean. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| denominator | Trial duration less occluded duration when excluded, otherwise full trial duration; unoccluded time must still be positive. | Required. Finite number. |
| observedGazeShare | Observed Gaze Share Unit: 1. | Required. Finite number. |
{
"input": {
"gazeDuration": 3,
"trialDuration": 10,
"occludedDuration": 4,
"excludeOccluded": true
},
"output": {
"denominator": 6,
"observedGazeShare": 0.5
}
}Limitations and assumptions
- Even including occlusion requires a positive unoccluded interval; actual tracking quality or attention is not verified.
- 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
Review the study protocol, actual observations and consent/assent records; use validated assessment and qualified professional judgment for developmental or care decisions.
References
Similar or alternative tools
- Infant Stimulus Look Duration Ratio
Return second looking duration relative to first.
- Observation Code Duration Share
Return a coded observation's target share under an exclusion policy.