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Developmental Trial Break Slack Tool

Compare a research schedule with an explicit break allowance.

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Description

Return trial-transition time and slack against a supplied break.

Developmental task timing and coded sequences need a common clock and explicit rules for exclusions, adjacency and response windows. A delay, duration share or transition rate is descriptive rather than a measure of developmental status.

Return trial-transition time and slack against a supplied break.

When to use this tool

Use Developmental Trial Break Slack when checking a supplied task-time or coded-sequence convention.

How to use the tool and how it works

  1. Enter nextTrialAt, priorTrialEnd, suppliedBreak. Use the units and conventions below.
  2. Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
  3. Read available, slack. Use the output convention below.

Return trial-transition time and slack against a supplied break. Require suppliedBreak >= 0; available = nextTrialAt-priorTrialEnd and slack = available-break.1

Input fieldMeaning and unitsAccepted input
nextTrialAtNext Trial AtRequired. Finite number.
priorTrialEndPrior Trial EndRequired. Finite number.
suppliedBreakSupplied BreakRequired. Finite number; minimum 0.
Output fieldInterpretationReturned shape
availableAvailableRequired. Finite number.
slackSlackRequired. Finite number.
json
{
  "input": {
    "nextTrialAt": 30,
    "priorTrialEnd": 20,
    "suppliedBreak": 5
  },
  "output": {
    "available": 10,
    "slack": 5
  }
}

Limitations and assumptions

  • Negative slack is retained; no recommended break or suitable study protocol is determined.
  • 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 original observations and study design; use appropriate statistical and professional methods for developmental conclusions.

References

  1. Calculation and input contract: developmental-psychology/developmental-trial-break-slack — tool.io

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