3   Scoring

This chapter explains some of the points around how Griff-it calculates scores for the GMDS-ER.

3.1   Faragher vs Huntley scoring

If any item outcomes are entered in subscale F (even just six failed items in a row), that subscale will be scored under the Faragher system. The General Quotient scores will therefore only be available if the child scored in the Faragher range in all other subscales.

3.2   Corrected age

3.2.1   How corrected age affects scoring

Corrected age allows Griff-it to compensate for a child who experienced an unusually short gestation.

For scoring purposes, the child’s date of birth is taken to be the Expected Delivery Date (EDD) if either of the following applies at the time of testing:

  • The child’s calendar age is less than 5 years and the period of gestation was less than 32 weeks.
  • The child’s calendar age is less than 2 years and the period of gestation was less than 36 weeks.

The normal period of gestation is taken to be 40 weeks. If the gestation period was of an unusual length but neither of the above conditions applies (for example, a child who was born prematurely but is 5 years old or more) then the child’s uncorrected date of birth is used in scoring.

3.2.2   Working with corrected age

When you create a new child record, Griff-it initially assumes the child experienced a normal (40 week) gestation period. To record a different gestation period, click the corrected age link.

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3.3   Scoring footnotes

This is a complete list of the scoring footnotes that may apply in the quick summary dialogue and in the corresponding report ingredient.

Corrected age applies

An unusual period of gestation was recorded for the child, and a corrected age was used in the calculation of the scores for this test session.

Corrected age has no effect

An unusual period of gestation was recorded for the child, but no correction to the child’s age needed to be made in the calculation of scores for this test session.

Fewer than three passes in Subscale F

A score could not be computed for subscale F since fewer than three test items were passed in that subscale.

Subscale F not appropriate (Subscales A-E all GMDS Birth to 2 years)

No item outcomes were recorded in subscale F and although the child was at least 2 years of age at the time of testing, the other subscales were all scored in the 0-2 years range. It was therefore inappropriate to administer subscale F.

Subscale F ignored (child too young)

No item outcomes were recorded in subscale F and the child was under 2 years of age at the time of testing. Subscale F has been ignored.

Subscale F not attempted

No item outcomes were recorded in subscale F, but the child is expected to have attempted it (i.e. the child is not covered by any of the exceptions above). This prevents computation of the General Quotient.

Overlap child (‘group 1’)

The child was under 2 years of age at the time of testing but scored in the Faragher (Section III/IV) range. Percentile scores are not available for one or more subscales.

High subscale (no ceiling)

One or more subscales had very high scores. For those subscales there was no series of six consecutive failed items but it was still possible to compute a total raw score.

Missing basal or ceiling

At least one subscale did not have a basal and ceiling recorded. Any results that could not be computed due to incomplete entry of item outcomes are marked with an asterisk (*).

Unattempted items

One or more subscales had unattempted items (items not marked pass or fail) between basal and ceiling. No credit will be awarded for these items and they do not count towards the ceiling.

Mixed subscales

In some subscales ceilings were obtained in the Huntley (Section I/II) range and in other subscales in the Faragher (Section III/IV) range. The overall or general quotient scores cannot be computed.

Age over eight years

The child was over 8 years old at the time of testing. Percentile and z-scores cannot be computed.

Huntley score too high for age equivalent

In rare cases where a child scores very high in the Huntley (0-2 years) range in a subscale, it is not possible to compute an exact age equivalent score for that subscale. However, the age equivalent score is at least 24 months.