# Aptem Assess – How to interpret scores

## Overview

Aptem Assess is a cognitive assessment tool that measures eight perceptual and cognitive processes that underpin an individual’s learning processes. It is based on proven assessment techniques that are used to assess cognitive neurodiversity.

## Interpreting scores

Where a learner has completed a longer version of any of the eight ‘games’ then a ‘standard score’ between 50 and 150 is generated for that cognitive domain. The score will be shown by a marker on a horizontal chart.

The standard scores are mapped to the following categories:

- 50 to 84: ‘Support required’ - the learner’s performance is within the bottom 16% of learners for that domain.
- 85 to 90: ‘Slightly Below Average’ – the learner’s score is in the lower quarter (25%) of scores.
- 91 to 110: ‘Average’ – the learner has scored within the average range which accounts for half of all learners.
- 111 to 115: ‘Above Average’ – the learner’s score is in the lower range of the top quarter (25%) of scores.
- 116 to 150: ‘Well Above Average’ – the learner’s performance is within the top 16% for that domain.

## How are standard scores calculated?

A standard score is a statistical measure of how an individual score compares to the mean score for a large group. It is based upon analysis of a large group of individuals’ scores from which is calculated the mean and standard deviation.

- Mean: this is the arithmetic average of all scores
- Standard Deviation: this is a measure of the spread of the scores

Aptem Assess scores are converted to a score range where the mean is 100 and the standard deviation is 15. These scores represent a learner’s performance on the ‘normal distribution’, sometimes called the bell curve, which are typically used to score cognitive tests and some examinations. This method of generating a standardised score accurately measures real differences test performance between learners.

A standard score of 100 represents a score which is exactly in the middle of the score range, i.e., better than 50% of the takers, and worse than 50% of the takers.

A standard score of 115 represents a score which is better than 84% of people and in performance terms is the lower boundary of the top 16%. The score represents a test performance that is plus one (+1) standard deviations below the mean (or average) score.

A standard score of 85 represents a score which is better than 16% of people and is the lower boundary of those with slightly below average or better performance. The score represents a test performance that is minus one (-1) standard deviations below the mean (or average) score

On any individual domain, most learners will have a score in the average range. The scores on each of the eight domains are independent of each other. This means that a learner could perform below average on one or more domains, and above average on other domains.