Reliability refers to the degree to which a test or assessment is consistent and stable in measuring what it is intended to measure. There are several methods to understand a scale's reliability. The measure of reliability for this assessment was computed through the test-retest method. Test-retest reliability was chosen as it helps to understand the extent to which the tool produces consistent scores when used on two different occasions. The test-retest reliability coefficients for the dimensions of Jombay's Acu-13 Assessment ranged from 0.64 to 0.73.

Internal consistency reliability of the dimensions of the Acu-13 Assessment was also computed. Internal consistency reliability was chosen as it measures the extent to which all of the items in a scale are measuring the same underlying dimension. The internal consistency of multi-item scales can be assessed by coefficient alpha. The alpha coefficients for all the dimensions of Acu-13 Assessment ranged from 0.51 to 0.82.

Validity assesses the degree to which a scale measures the construct that it claims to measure. Content Validity is addressed after an assessment has been created. Reputed experts from academia and industry (N=15) rated each item to indicate the degree to which it was aligned to a particular dimension and was perceived as important for measurement. Acu-13 dimensions have content validity ratios (CVR) ranging between 0.65 to 0.91, with a CVR closer to 1 indicative of higher agreement among the raters on the relevance of each item within the dimension. The high range indicates that items within a dimension examine all the targeted aspects of the dimension.

Predictive validity was also computed. Predictive validity is established by comparing an individual's performance on an assessment to his/her future performance on a set of predetermined criteria. To establish predictive validity, a pool of candidates was identified. For these candidates, independent behavioral ratings on all dimensions from managers or immediate stakeholders were recorded. The predictive validity coefficient for Jombay's Acu-13 Assessment was found to be 0.5.

Norms consist of data that help determine the relative standing of an individual who has taken a test. In itself, a candidate's score has little meaning. Hence, it is hence essential that the test score must be interpreted as indicating the candidate's position relative to others in the candidate's group.

Acu-13 Assessment has a defined set of global norms which includes all data across industries, functions, and experience levels. Norming has been done at the dimension level and is based on the mean and standard deviation of the sample. Jombay norm data is annually updated.