5.category specific to the product (not the same for a washing machine or a computer).
Each of them give you a score out of 20, and the total is divided by 10.
So you can have 0 on the 2., making the phone hard to repair, but still having a 8/10 score.
In the end its similar to Booking reviews, where 6/10 is very low and you want to avoid this hotel.
Do you have any link to the research you're reffering to ? I looked into this a while ago when wondering why my headlamp had red ligths, and people seemed to advocate for a dim green light (eg. http://stlplaces.com/night_vision_red_myth/), but I'm struggling to find any research article backing this
1.documentation available
2.ease of repair
3.availability of spare parts
4.price or spare parts
5.category specific to the product (not the same for a washing machine or a computer).
Each of them give you a score out of 20, and the total is divided by 10. So you can have 0 on the 2., making the phone hard to repair, but still having a 8/10 score.
In the end its similar to Booking reviews, where 6/10 is very low and you want to avoid this hotel.
Details (in French) https://www.ecologie.gouv.fr/indice-reparabilite