1. Thigpen and Cleckley Quick Notes

2. Background Dissociative Identity Disorder
Multiple Personality Disorder
Having more than one personality in one mind.

3. Aim/hypothesis
To help 25 year old married lady with her “severe headaches” and “blackouts”

4. Methodology
Case study and longitudinal study

5. Variables
No variables due to case study

6. Participants Eve White-Repressive Eve Black-Regressive
Jane-Emergent Personality

7. Procedure Collected evidence
A. Puzzled by expensive clothes trip. Had no memory.
B. Letter –Shift in tone and different handwriting
C. Hearing an imaginary voice, insane?
D. Age 6, trip to wood, Eve Black prank

8. Data 100 hours of interviews Observations
Psychometric tests-IQ and Memory
Projective tests-Rorscach and human figures
Physiological Tests-EEG

9. Apparatus Completed at the office of Thigpen and Cleckley
Videotape and recorder
Assessments

10. Main Findings
Minute alterations of manner, gesture, expression, posture, eyebrow and eyemovement, and nuances in reflex or instinct.
IQ-110 for White and 104 for Black
Memory-Black same level and White far above IQ
Rorshcach-Black healthier than White. Black-hysterical traits, White-anxiety, OCD, rigidity
Projective: White-Repression, Black-Regression
EEG: 12.5 Black and 11 for White and Jane (Fast sometimes psychopathic)

11. Conclusions
This is a genuine case of MPD

12. Strengths Case study Variety of tests (validity)
Amount of data (reliability)
Psychometric Tests
Projective Tests

13. Weaknesses Generalisability Practicality Ethics Psychometric tests
Projective Tests

14. Ecological Validity
High due to natural setting

15. Ethics
D –
R – D–
I -
C -
H –

16. Usefulness Limited due to applications to others (small percentage)
But could be deemed therapeutic for participant herself

17. Relationship to approach
MPD or DID

18. Relationship to issues
Case Studies
Generalisation
Psychometrics
Sampling