All 20 test persons can remember when they first used a computer and give an approximate age:
When asked, nine test persons (TP 03, 07, 08, 11, 12, 15, 17, 18, 19) are "very sure" and seven test persons (TP 01, 04, 09, 13, 14, 16, 20) are "rather sure" that they have used a computer for the first time at the given age. Test persons 02, 05, 06 and 10 are "rather unsure" when answering:
Test person 08 spontaneously expresses a difficulty in formulating the question: "Used or needed? This is not understandable. There is a difference. I used it in the beginning for solitaire etc., I used it later.” However, the test person can still give an answer and chooses the answer 13 years.
Similar abnormalities were observed in test persons 06 and 07. They relate their statements to the point in time when they worked on a computer for the first time, even though they had previously used a computer to play games:
When asked about the make or model of the first computer they used, seven test persons (TP 01, 03, 07, 09, 13, 14, 16) state that they cannot remember it. In some cases they can only remember the software or operating system and not the exact brand or model. Test person 11 does not provide any information on this as he has never used a computer. The other twelve test persons (TP 02, 04, 05, 06, 08, 10, 12, 15, 17, 18, 19, 20) can remember the brand and/or model. From this it can be concluded that the latter group can remember back very precisely.