Description
Check one supplied n-back stimulus comparison.
Cognitive-task records distinguish stimuli, responses, exposure order, rating scales and adaptive timing. A stop-delay update does not estimate inhibition latency, and a screen-coordinate mapping is not a calibrated perceptual measure. Supplied observations and task flags do not themselves establish ability, diagnosis or a psychological mechanism.
Check one supplied n-back stimulus comparison.
When to use this tool
Use N-Back Single Trial Target Flag when you already have stimuli, index, lag and need to check one supplied n-back stimulus comparison.
How to use the tool and how it works
- Enter stimuli, index, lag. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read hasComparison, target, comparisonIndex. Inspect hasComparison, target before interpreting the associated values.
Require a valid safe zero-based index and positive safe lag; if index>=lag compare exact stimulus strings and return index-lag, otherwise false target with comparisonIndex=-1 and hasComparison=false.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| stimuli | Stimuli | Required. Array of text; maximum UTF-16 length 8192; maximum items 256. |
| index | Index | Required. Safe integer; minimum 0. |
| lag | Lag | Required. Safe integer; minimum 1. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| hasComparison | Has Comparison | Required. Boolean. |
| target | Literal equality to the lagged stimulus; false without a comparison, distinguished by hasComparison. | Required. Boolean. |
| comparisonIndex | index-lag when available, otherwise -1 sentinel. | Required. Safe integer. |
{
"input": {
"stimuli": [
"A",
"B",
"A",
"C"
],
"index": 2,
"lag": 2
},
"output": {
"hasComparison": true,
"target": true,
"comparisonIndex": 0
}
}Limitations and assumptions
- An unavailable comparison is not a nontarget observation. No task validity, trial response, memory score, stimulus timing or cognitive ability is assessed.
- 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 complete experimental protocol, stimulus calibration, observation records and analysis plan. Use an appropriate full task and statistical analysis for a research interpretation; local timing, rating and coordinate transformations preserve only their declared conventions.
References
Similar or alternative tools
- Memory Recall Serial Position Label
Label an item's supplied serial position and endpoint flags.
- Stop Signal Single Delay Step
Update one supplied stop-signal delay within fixed bounds.