⛔ Ger Delaney's Guide To br br ✅ Chapter  1br br Understanding Mass formation psychosis is br br br Mass psychosis Formation refers to an outbreak of unusual and uncharacteristic behaviors, thoughts and feelings, or health symptoms shared among a group of people. People affected by mass hysteria: typically do so because An idea was planted either Accidentally or on purpose. what happened in 2020 was a prime example of mass psychosis formation.