The Test That Changed Nothing

Transcript

1. 01

   The film commonly remembered as Shazaam starring Sinbad never existed.

2. 02

   That shared wrong recollection is what people call the Mandela Effect.

3. 03

   2013: Mark J. Huff, Sara D. Davis, Michelle L. Meade tested memory contagion.

4. 04

   Participants studied six household scenes, each displayed for 15 seconds.

5. 05

   A confederate introduced items absent from the studied scenes.

6. 06

   Participants often reported contagion items a confederate suggested on later solo tests.

7. 07

   The suggestions appeared as answers from five supposed earlier participants.

8. 08

   Participants moved through the lab to the next stage. A badge wouldn’t scan at the door.

9. 09

   Some completed a 12-minute recall test; others did arithmetic for the same time.

10. 10

    Misinformation can make later details seem part of the original event.

11. 11

    The source-monitoring test asked participants to identify each item's source.

12. 12

    Initial tests raised correct final recall in Experiment One: .29 to .34.

13. 13

    Initial testing did not significantly change false recall of the erroneous items.

14. 14

    Model comparison favored no effect: probability .89.

15. 15

    In 2010, Fiona Broome coined “Mandela Effect” for collective false memory.

16. 16

    At Dragon Con, others thought Nelson Mandela died in prison in the 1980s.

17. 17

    Initial test cut false source recognition: fewer blamed the original event.

Sources

• Mandela Effect: 10 Examples of False Memorieshealth.clevelandclinic.orgsecondary
• The effects of initial testing on false recall and false recognitionmontana.edusecondary
• The Mandela Effect | Know Your Memeknowyourmeme.comsecondary