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CATEGORIES:Cambridge Psychometrics Centre Seminars
SUMMARY:Using the Ekman 60 Faces Test to Detect Emotion Re
 cognition Deficit in Brain Injury Patients - Lunin
 g Sun
DTSTART;TZID=Europe/London:20141021T160000
DTEND;TZID=Europe/London:20141021T170000
UID:TALK55590AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/55590
DESCRIPTION:It is well documented that brain injury patients s
 uffer from impaired emotion recognition. As one of
  the most widely used measurement tools\, the Ekma
 n 60 Faces test assesses the ability to recognise 
 emotion via forced-choice labelling of facial expr
 essions with one of six basic emotions: happiness\
 , sadness\, surprise\, fear\, disgust and anger. T
 he administration of the test on brain injury pati
 ents is psychometrically problematic in terms of s
 coring accuracy\, measurement invariance and asses
 sment efficiency. The work presented in this talk 
 aims to evaluate the psychometric properties of th
 e Ekman 60 Faces Test and applies modern psychomet
 ric techniques to improve its accuracy and efficie
 ncy.\n \nThis work benefits from drawing on a larg
 e database of 194 brain injury patients\, which is
  very rare in clinical research. Both classical st
 atistical analysis and modern psychometric methods
  are applied to the detection of emotion recogniti
 on deficit in brain injury patients in contrast to
  a non-afflicted control group. Confirmatory Facto
 r Analysis reveals that a bi-factor model exhibits
  the best model fit. It specifies a general factor
  of emotion recognition and six specific factors c
 orresponding to specific emotion recognition. Fact
 or scores\, which take into consideration the diff
 erential difficulty levels of the items\, are sugg
 ested as indicators of the underlying abilities. I
 tem Response Theory analysis is then performed on 
 the individual scales\, and measurement invariance
  is further evaluated. After removing constraints 
 on items that display bias\, (partial) scalar inva
 riance is established for specific emotion recogni
 tion scales. Finally\, two distinctive approaches 
 are employed to achieve brief measurement. First\,
  a short form of the original test is developed wi
 th four items per scale balanced for the gender of
  the expressive face. Second\, an adaptive testing
  procedure is simulated in order to explore the ap
 plication of adaptive testing techniques to neurop
 sychological assessment\, which has the potential 
 to significantly shorten the administration while 
 maintaining comparable level of accuracy and preci
 sion to the full-length scale.
LOCATION:2nd Floor Seminar Room\, Department of Psychology\
 , Downing Site\, Cambridge
CONTACT:Chan Yin Wah Fiona
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