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Ecological Assessment Battery for Numbers (EABN) for brain-damaged patients: standardization and validity study.

M Villain¹, C Tarabon-Prevost¹, E Bayen²

¹Service de médecine physique et de réadaptation, groupe hospitalier Pitié-Salpêtrière, AP-HP, 47, boulevard de l'Hôpital, 75651 Paris, France.

Annals of Physical and Rehabilitation Medicine

|May 23, 2015

Summary

The Ecological Assessment Battery for Numbers (EABN) is a new, validated tool for assessing number-processing deficits in brain-injured adults. It demonstrates good psychometric properties and aids in identifying daily life difficulties.

Keywords:

Acalculia Activities of daily living Ecological assessment Stroke Traumatic brain injury

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Area of Science:

Neuropsychology
Cognitive Rehabilitation
Clinical Assessment

Background:

Number-processing deficits can significantly impair daily functioning after brain injury.
Existing assessment tools may not adequately capture real-world number-processing challenges.
The Ecological Assessment Battery for Numbers (EABN) was developed as an ecological tool for this purpose.

Purpose of the Study:

To standardize and validate the Ecological Assessment Battery for Numbers (EABN) for assessing number-processing disorders in brain-injured patients.
To evaluate the psychometric properties of the EABN.

Main Methods:

Standardization involved 126 healthy controls, stratified by age, sex, and sociocultural level.
The EABN was administered to 17 brain-injured patients.
Construct validity was assessed by comparing EABN scores with a French analytical calculation test (ECAN) in a subgroup of 10 patients.
Discrimination indexes were calculated to evaluate subtest sensitivity.

Main Results:

Sociocultural level significantly impacted standardization scores.
Nine out of 17 patients exhibited pathological EABN scores, indicating difficulties with time telling, appointments, and numerical data.
High concordance was found between the EABN and ECAN (Kendall's w=0.97).
The EABN demonstrated good discriminatory power for tasks like movie scheduling, cheque writing, and recipe following (scores >0.4).

Conclusions:

The EABN is a novel, standardized tool for assessing number-processing disorders in adults.
The EABN possesses good psychometric properties for use with brain-injured populations.
This tool effectively identifies practical difficulties related to number processing in daily life.