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Family Tree Test – the new test of executive functions

Family Tree Test – the new test of executive functions. Prague Psychiatric Centre preiss@pcp.lf3.cuni.cz. Marek Preiss. And: Jiří Lukavský Akademie věd Praha Klára Vraná Česká televize, Praha Helena Štolfová FF UK Praha Hana Kučerová Psychiatrická klinika FN MU. Daniel Kořínek

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Family Tree Test – the new test of executive functions

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  1. Family Tree Test –the new test of executive functions Prague Psychiatric Centre preiss@pcp.lf3.cuni.cz Marek Preiss And: Jiří Lukavský Akademie věd Praha Klára Vraná Česká televize, Praha Helena Štolfová FF UK Praha Hana Kučerová Psychiatrická klinika FN MU Daniel Kořínek Psychiatrické centrum Praha Milan Kopeček Psychiatrické centrum Praha Mabel Rodriguez Psychiatrické centrum Praha Pavel Mohr Psychiatrické centrum Praha

  2. Cognitive functions in schizophrenia ++ Primary Field of Assessment, + Secondary Field of Assessment Tůma I, Lenderová Z. Schizofrenie a kognitivní funkce. Psychiatrie, 2001, 4, 275-282

  3. Neuropsychological tests

  4. Family Tree Test (FTT) – 1st version PETER Weiss Grandson of Filip

  5. Grandparents Parents 14 cards with names and relations Speed (time) and quality (mistakes) 14 PETER Weiss Grandson of Filip

  6. Computer programfor administration • and evaluation of FTT • (dr.Jiří Lukavský; • http://vyzkum.jinak.cz/fttest) • Training session • Working with mouse • Formal instructions to the patient • Evaluation of own performance • Number of „good“ and „false“ • movements • Activity/passivity and other • parametres • - Sequence of the progress Close together following the process of creating Rey-Osterrieth Figure (CFT) 14

  7. FOUR SAMPLES Controls and schizophrenics had the same avarage age and male:female ratio Controls were matched with patients in age, sex and education

  8. SCHI (18-61 yrs) and controls 1 (18-57 yrs) MOOD (21-69) and controls 2 (20-66 yrs) SCHI - (-) 0.37 (n.s.) CON1 – 0.37 (n.s.) MOOD – 0.37 (p=.09) CON2 – 0.44 (p=.03) Age and FTT Speed • results seems to be miscellany, but: • acute state in young people with schizophrenia could reverse the trend of reduce speed with age • as CON2 shows: larger samples are needed

  9. Education and FTT FTT should be easy for all educational levels, no relationship to education should be found! SPEED MISTAKES

  10. Performance - speed Time in minutes • Both clinical samples need more time • Schizophrenics have significantly increased time to finish FTT • No one schizophrenic was able to finish within 6 minuts, although ½ of controls finished it

  11. Performance - speed MOOD sample did not differentiate from controls, but schizophrenics were

  12. Performance - quality • Both clinical samples make more mistakes • Schizophrenics have significantly increased number of mistakes • No schiz.patient without a mistake Number of mistakes

  13. Mistakes in schizophrenia and controls 76% controls and 0% schizophrenics made no mistake High frequency of „0“ mistakes in controls Zero frequency of no mistakes in schi

  14. Convergent validity Relationships with common “frontal“ neuropsychological tests were used in MOOD sample MISTAKES • No relationship between speed/mistakes and common neuropsychological tests was found • if planning is a major latent variable, Tower of Hanoi/London should be used? • - findings in schizophrenia should be added

  15. Alternative forms • A + B versions were constructed as alternative SPEED MISTAKES • MOOD sample could be too much dependent on actual state, tiredness… • Correlations show sufficient alternativeness of both forms

  16. Strategies to solve the test • Chaotic approach … • Finding non-existing informations • Upside down strategy • Long hesitating in the beginning • The best subjects use working memory and fast attention shifts • From parents to grandparents …

  17. Discussion • Does it enough appropriate that FTT differentiate between schizophrenia subjects and controls for a „new test“? • Focuse on qualitative side of performance could be a strong advantage of this approach

  18. Discussion • FTT as „frontal“ test? • If there is no correlation with WCST and other executive tests? • Future research should be more oriented to comparisons with the tests of planning ability (like Tower tests)

  19. Future • Validization study on large sample of healthy subjects • Focus on strategy to solve FTT and qualitative aspects • Study the influence of intelligence on FTT • To include FTT into evaluation of rehabilitation

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