With the stitching activity, observe the person's ability to retain an image using directionality as well as difficulty in three-dimensional space. While doing the single cordovan stitch, the person goes from front to back, and front to back again, with the tip to the left at least twice, but the person does not tighten in sequence.
ACL 4.8 displays an awareness of directionality that is absent in ACL 4.6.
With copying, they will copy Design B without the spacing. They will be confounded by the large spacing left at the end of the row between the tiles and the frame but cannot visualize the spacing as a way of solving the problem. If they are using Design D, they will place correctly the bold red and yellow tiles. The subtle colours of the green, blue and purple may get mixed up.
With diamond colouring, they can colour one triangle at a time correctly as they have enough mental energy to keep referring to the sample until they are done. They do not colour whole sections at a time.
To Verify
Being able to store an image in working memory and comparing to this image until they are done occurs in ACL 4.8.
Check reading comprehension. Can the person use a check list? Does the person use literacy to comprehend the use of written instructions? If they have reading comprehension, this verifies ACL 4.8.
To Rule Out
The difference between ACL 4.8 and 5.0 is the ability to store an image in short-term memory. How many times must a person refer to a sample before completing an action. If they can complete several actions before the need to refer back to the sample, the information is being stored in the person's short-term memory rather than just their working memory.
Look for the absence of neuromuscular adjustments. This enters the scale in ACL 5.0 when different gradients of movements are perceived and stored in short-term memory. A pattern is also observed in ACL 5.0 and maybe ruled out to confirm ACL 4.8.