Claims researchers measured human uniqueness is on the decline

https://m.youtube.com/watch?v=UTBkF3O6wC8

Side note a sociologist did a study on a specific Church of Christ branch accused of being cult like compared with mainstream Church of Christ Churches and found a lower variability in certain measurements in the group accused of beimg cult like which were similar to the personality profile of the leader in other words the members ended up having a closer personality to the leader

Can not remember source