Mandela Effect explained by Parallel Universe and Multiverse Theory

So, what is the Mandela Effect? There have been many definitions to this strange occurrence.
Psychologists explain the Mandela Effect via memory and social effects - particularly false memory. This involves mistakenly recalling events or experiences that have not occured, or distortion of existing memories. The unconscious manufacture of fabricated or misinterpreted memories is called confabulation. In everyday life confabulation is relatively common. But most people dismiss this psychological explanation, simply because there are way too many people who remember the exact same thing, with great detail. These people attribute these false memories, to the existance of multiple universes, or parallel universes, and believe their consciousness tapped into these realities which left them with the so called false memories, who in fact are real memories, simply not of this reality, but of a parallel one.