COGS101 Lecture Notes - Lecture 11: Hypnotic Susceptibility, Hypnosis, Agnosia
18 May 2018
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MODELLING DELUSIONS WITH HYPNOSIS
WHY USE HYPNOSIS IN COGNITIVE SCIENCE?
• Focusing attention - suggestions to experience things differently.
• Only some people can be hypnotised. 70-80% medium hypnotisable, 10-15% highly
hypnotisable.
MYTHS ABOUT HYPNOSIS
The powerful hypnotist myth:
• "I can control your behaviour"
The everlasting myth:
• "You will keep responding until I tell you to stop"
The faking myth:
• "Hypnotised people are just faking hypnosis"
WHAT IS HYPNOSIS?
• Social interaction between two people – hypnotist and a subject;
• Offers suggestions to the subject -> changes their experiences;
• Involves changes in attention, absorption, and reality monitoring.
WHAT HAPPENS DURING HYPNOSIS?
• Induction
• Hypnotic items
o Suggestion
o Tests
o Cancellation
• Deinduction
HYPNOTIC INDUCTION
• Defines the context as hypnotic;
• switch that creates an altered state;
• Generates effects that happen sooner and are more compelling.
HYPNOTIC SUGGESTIONS
• Involves alterations in perception, memory, action, thought and emotion.
• Researchers may compare:
o Suggestion vs no suggestion
o Different versions of a suggestion
o Hypnotic suggestion vs non-hypnotic instruction.
TYPES OF SUGGESTIONS
Ideomotor - thoughts becoming action.
• Suggesting an outstretched arm is too heavy to hold up.
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