Clip comparison

You will see pairs of short clips (30 seconds each, no sound) or pictures. Both show building work in a house. Each pair comes with a few short questions. Watch both clips for at least 5 seconds, then tap or click the one you prefer for each question, or press "No preference". You can play a pair again as often as you like. There is no right answer; answer by what you see.

Each answer is saved as you give it. You can stop at any time and come back later with the same code.

Round done.

You have seen every clip once. You may stop here: your answers are saved, and you can come back later with the same code.

If you have time, you can go on; the next pairs show the same clips against other comparisons.

Thank you.

Your answers are saved. If more pairs are added later, you can come back with the same code and go on.