Education Endowment Foundation: Bus story

About the measure

Rating Psychometric

Rating Implementation

Subscales

Target construct

Oral language: expressive discourse skills.

Test Authors

Renfrew, C.

Publisher

The Centerville School Delaware

Implementation

AgeⓘAge (in years) covered by the survey. Using the measure outside this age range may result in inaccurate information.

3 years and 6 months to 7 years year(s)

Prior knowledge required

Recommendations regarding who would be qualified to administer the test are not specified.

ScoringⓘStandardised: Can easily be summed or averaged Complex: Requires judgement or assessment on behalf of the scorer

Scoring unreliable

TimeⓘAn estimate of the time (in minutes) taken for an individual to complete one survey

Norm referenced min(s)

Psychometric

UK normsⓘWhether the measure has been calibrated with a UK sample (as opposed to generating psychometric details from a Foreign (e.g. USA) sample).

YES

Norm / Criterion referenced

Norm referenced

Standardisation sample

1993, N= 573

ReliabilityⓘWhere observations (e.g. teacher or peer report rather than self report) are used, this measure of reliability indicates how closely related each score is. A higher value suggests a more reliable measure.

Twenty-seven children ranging in age from 4 years, 6 months to 6 years, 11 months were retested with a four week interval. The test-retest coefficients were: Information .7918, Sentence Length .7293, and Complexity .5825. Inter-rater reliability, Information: .92, .72 and .70, Sentence Length: .70, .83, and .81, Complexity: .22, .60. and .33

Criterion validityⓘAn assessment of how well the measures relates to other, well-validated assessments.

Insufficient data in the public domain to evaluate

Construct validityⓘFurther to the use of CFA and EFA, this reports any details demonstrating how well the measure is seen to represent the conceptual domain it comes from.

The US and UK versions were correlated as follows: Information = 0.98and Sentence Length = 0.98. No other tests were reported.

Concurrent validityⓘSimilar to Criterion, this is a measure of how well the measure relates to other similar (or dissimilar) domains, as evidence of its validity.