Description
Compare two bounded caregiver ratings.
Developmental research scores can be expressed as changes, ratios, reversed scales or contrasts between conditions. Those arithmetic forms have distinct denominators and need a suitable measurement model before they support psychological interpretation.
Compare two bounded caregiver ratings.
When to use this tool
Use Caregiver Report Disagreement One Item when checking a supplied score or response contrast.
How to use the tool and how it works
- Enter firstRating, secondRating, scaleMinimum, scaleMaximum. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read signedDifference, absoluteDifference, rangeNormalizedDifference. Use the output convention below.
Compare two bounded caregiver ratings. Require positive scale width and ratings within it; signedDifference = second-first, absoluteDifference its magnitude, and rangeNormalizedDifference divides by scale width.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| firstRating | First Rating | Required. Finite number. |
| secondRating | Second Rating | Required. Finite number. |
| scaleMinimum | Scale Minimum | Required. Finite number. |
| scaleMaximum | Scale Maximum | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| signedDifference | Signed Difference | Required. Finite number. |
| absoluteDifference | Absolute Difference | Required. Finite number. |
| rangeNormalizedDifference | Range Normalized Difference | Required. Finite number. |
{
"input": {
"firstRating": 2,
"secondRating": 4,
"scaleMinimum": 1,
"scaleMaximum": 5
},
"output": {
"signedDifference": 2,
"absoluteDifference": 2,
"rangeNormalizedDifference": 0.5
}
}Limitations and assumptions
- Ordinal numerical differences do not establish equal psychological intervals or clinical disagreement significance.
- 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 validated instruments, an appropriate study design and professional assessment when interpreting individual development or cognitive function.
References
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