Shopping mall experiment is older and served as an intro to the main point of the post. This new one with the sound is excellent and I really hope you will find the time to read the full research.

I don't think we should be giving too much credence to dubious research carried out on a group of 24 people.

I think we should. This is how it starts, with smaller research leading to bigger ones, more funding is necessary but this topic surely is interesting and important enough to be worked on more in the future. Nothing is exact now but it does raise good questions and open doors for more to come. Thank you for your valuable contribution to this topic.