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AUTISM
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1. Autistic Disorder n Impairments in social interaction, communication, and imaginative play. n Apparent before age 3. n Also includes stereotyped behaviors, interests, and activities
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2. Asperger’s Disorder n Impairments in social interactions, and presence of restricted interests and activities n No clinically significant general delay in language n Average to above average intelligence
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CHARACTERISTICS n 1. Communication/Language n 2. Social Interaction n 3. Behaviors n 4. Sensory and movement disorders n 5. Resistance to change (predictability) n 6. Intellectual functioning
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2. Social Interaction n One of hallmarks of autism is lack of social interaction n 1. Impaired use of nonverbal behavior n 2. Lack of peer relationships n 3. Failure to spontaneously share enjoyment, interests, etc. with others n 4. Lack of reciprocity n Theory of mind?
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6. Intellectual functioning n Autism occurs in children of all levels of intelligence, from those who are gifted to those who have mental retardation n In general, majority of individuals with autism are also identified as having mental retardation – 75% below 70 n Verbal and reasoning skills are difficult n Savant syndrome
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6/9/2016 Baron-Cohen, Leslie & Frith (1985) Does the Autistic child have a Theory of Mind?
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6/9/2016 The Sally-Anne Test A tool to diagnose Autism?
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The Baron Cohen et al conclusion n That autistic children do not have a n THEORY OF MIND n are unable to recognise that other people may have ‘their own’ representation of the world in their heads
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Another Advanced Test of Theory of Mind: Evidence from Very High Functioning Adults with Autism or Asperger Syndrome. Simon Baron-Cohen and Therese Jolliffe (University of Cambridge) Catherine Mortimore and Mary Robertson (University of London). 1997
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Subjects Group 1 n 4 high functioning autistic adults with IQ > 85 (WAIS-R) diagnosed using DSM-IV with language delay. n 12 Asperger Syndrome adults diagnosed using ICD-10 with no language delay. n All together 13 males and 3 females. n All within normal intelligence range.
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Subjects Group 1 n Sampling – clinical sources plus advert in National Autistic Society magazine ‘Communication’.
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Group 2 n 50 normal age matched adults (25 males and 25 females). n Their IQ was not measured but was considered to be within the normal range.
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Group 3 n 10 Adult Tourette Syndrome (TS) sufferers. n Age matched with groups 1 and 2. (8 males and 2 females). n IQ greater than 85
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Q1: Write a suitable alternate hypothesis and a null hypothesis for this study:
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Q2. The normal adult participants were ‘age-matched’. What does this mean? n Their age range was similar to the age range of the other two groups. n This is done as a control to make sure any differences between the groups is due to the IV rather than age differences (age can act as confounding variable)
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Subjects Groups 1 and 3 had to pass: n 2 x 1 st order false belief tasks and n a second-order task (all passed). n A first-order task requires the subject to infer the thoughts of another person. A second-order task involves the subject reasoning about what one person thinks about another person’s thoughts.
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3. Explain why adults with Tourette syndrome were selected as a control group. n Comparing people with autism to normal people is in a way unfair – differences may be due to the fact that the people with autism have had to cope with a developmental disorder since childhood, resulting in a disrupted school life and strained peer relationships, rather than Theory of Mind n People with Tourettes share a similar background; differences between them and the people with Autism is therefore more certain to be due to Theory of Mind
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Method and Design n Eyes Task n Strange Stories task n 2 control tasks n Presented in random order.
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The Eyes Task n Magazine photos n 15cm X 10cm n Black and White n Midway along nose to just above eyebrow. n 3 second exposure and then a forced choice between 2 mental states.
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The Eyes Task n “Which word best describes what the person is feeling or thinking?” n 25 pictures
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1Serious or Fantasising
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2Anticipation or Despairing
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3Certain or Doubtful
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4Submissive or Defiant
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5Uncertain or Confident
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6Concerned or unconcerned
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7Distrustful or Trustful
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8Suspicious or Trusting
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9Unfriendly or Friendly
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Answers
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1Fantasising
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2Anticipation
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3Doubtful
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4Defiant
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5Confident
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6Concerned
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7Distrustful
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8Suspicious
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9Friendly
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The Eyes Task n Four judges 2 male and 2 female picked the labels and opposites in open discussion. n Eight judges 4 males and four females independently agreed the labels unanimously. n They were blind to the hypothesis. n Task validated by Happe’s (1994) strange stories.
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Baron-Cohen: 3 other tasks additional to Eyes Test
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Control task 1: Happe’s Strange Stories n Also an advanced TOM test n Since both are tests of the same thing (ToM) then if subjects had difficulties with one of these tests, then they should also have difficulties with the other n This is a way of checking VALIDITY – called CONCURRENT validity – based on assumption that two measures of the same thing should agree / produce similar results
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Control tasks. n Gender recognition task – the same eyes were used but participants were required to recognise gender. n Basic emotion recognition task (emotion task) – participants are required to judge the emotion of the whole face. n Six faces were used – happy, sad, angry, afraid, disgusted and surprised. These are considered to be basic emotions.
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Q5. Explain why it was desirable to use control tasks in this study n 1. To control for the possibility that OTHER FACTORS besides the IV (Theory of Mind in this case) could affect the DV (score on Eyes test) n These other factors can act as extraneous variables.
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Q6. Explain what each of the control tasks were controlling n Gender recognition task – the task involved a social judgement, i.e. whether someone looks like a man/woman, rather than mind reading. n This task was done to check whether poor performance on the eyes task was due to general deficits in face perception or social perception rather than a lack of theory of mind skills.
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Q6. Explain what each of the control tasks were controlling ctd. n Basic emotion recognition task n this was done to check whether poor performance on the Eyes task could be attributed to a problem with recognising basic emotional expression rather than a lack of theory of mind skills.
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Q7: Why did only group 1 do the control tasks? n They were the only ones suspected to have difficulty with theory of mind skills, demonstrated in their lower scores on the Eyes test; n It was therefore important to establish whether their lower scores were indeed due to issues with ToM and not something else.
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n The poor performance on the Eyes task was NOT mirrored in the two control tasks, suggesting that poor performance by G1 was NOT due to n the stimuli being eyes, or n to problems with basic emotion recognition n BUT probably due to lack of ToM.
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Results n The performance of the autistic participants was equivalent to that of the Asperger’s. n On the strange stories task in the Tourette participants made no errors whereas the Asperger’s made many mistakes.
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Results n Intelligence is not a factor here as all participants were within the normal range. n frontal lobe damage also is not a factor as Tourette’s participants did well even though frontal lobe damage is thought to be a factor in Tourette’s syndrome.
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Afters… n The Lovaas Programme – why so expensive? n FC – Stephen Hawking
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Male vs female brains Women empathise Men synthesise
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HOMEWORK: n Read p 48 – ‘Afters’ n Spend at least ½ h on the internet reading up on: n The Lovaas Programme / other Autism sites / Freaks, Geeks & Asperger syndrome n Differences in male & female brains
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