Publications by authors named "Sibel Kazak Berument"

4 Publications

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[Turkish expressive and receptive language test: I. Standardization, reliability and validity study of the receptive vocabulary sub-scale].

Turk Psikiyatri Derg 2013 ;24(3):192-201

Objective: A reliable, valid and original test to assess the receptive vocabulary skills of children in Turkey was not available. Thus, the purpose of the current study was to develop a receptive vocabulary test for Turkish children based on the Turkish language.

Materials And Methods: For the Receptive Vocabulary Sub-Scale (TIFALDI-RT) 242 concrete and abstract words were chosen from word frequency lists and a comprehensive Turkish Dictionary. Pilot data were collected from 648 children aged 2 to 13 from Ankara, and norm data were collected from a nationally representative sample of 3755 children.

Results: Item analysis (item difficulty, discrimination and distractor) was carried out on the pilot data and based on the results, the total item number was reduced to 157. Further, three parameter item analyses (IRT) were carried out on the norm data by using BILOG-MG (SSI, 2002), and the results indicated that the TIFALDI Receptive Vocabulary Sub-Scale could be reduced to 104 items to assess 2 to 12 year-old children's receptive vocabulary. Test-retest and internal consistency reliabilities were calculated for the whole sample and age groups separately, and all the coefficients were high. For the validity, the relationship between the WISC-R and Ankara Developmental Screening Inventory (AGTE) and Receptive Vocabulary Sub-Scale were investigated. Once again, the TIFALDI Receptive Vocabulary Sub-Scale scores were found to be significantly related to WISC-R and AGTE scores.

Conclusion: The TIFALDI Receptive Vocabulary Sub-Scale was developed on the basis of the Turkish Language and norm data were collected from a nationally representative sample. The TIFALDI-RT also had a high reliability and validity. Thus, the TIFALDI-RT can be used to assess 2 to 12 year-old children's receptive vocabulary skills.
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March 2016

Pre-linguistic Autism Diagnostic Observation Schedule adapted for older individuals with severe to profound mental retardation: a pilot study.

J Autism Dev Disord 2005 Dec;35(6):821-9

Department of Psychology, Middle East Technical University, Ankara, Turkey.

The Autism Diagnostic Observational Schedule (ADOS) is a semi-structured observational scale developed to assess social interaction, communication and play in individuals who are suspected to have autism. Since the ADOS is not suitable to be used with severely or profoundly mentally retarded adolescents and adults with very limited language skills, materials and some of the tasks of the PL-ADOS and the original ADOS (the former versions of the current ADOS) were adapted. Results indicated that almost all of the overall ratings showed good reliability and discriminative diagnostic validity. Furthermore, the combination of codings into an overall algorithm score on social/communicative behavior resulted in a sensitivity of .82 and a specificity of .85 when using a cut-off score of 15.
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http://dx.doi.org/10.1007/s10803-005-0027-4DOI Listing
December 2005

Personal resources, coping self-efficacy, and quake exposure as predictors of psychological distress following the 1999 earthquake in Turkey.

J Trauma Stress 2005 Aug;18(4):331-42

Middle East Technical University, Ankara, Turkey.

This study examined the predictive power of personal resources (i.e., self-esteem, optimism, and perceived control), severity of earthquake experience (i.e., material and human loss and perceived threat), and coping self-efficacy (CSE) on general distress, intrusion, and avoidance symptoms among the survivors of the 1999 Marmara earthquake in Turkey. Specifically, we expected that CSE would mediate the links between personal resources, severity of earthquake experience, and distress. Survivors (N = 336) filled out various measures of earthquake exposure, personal resources, CSE, and distress. Results of the path analyses indicated that personal resources, earthquake experiences, CSE, and gender have direct effects on intrusion and general distress. Personal resources had also an indirect effect on general distress mediated by CSE. Findings were discussed considering the implications for conservation of resources model and social cognitive theory as well as for interventions following natural disasters.
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http://dx.doi.org/10.1002/jts.20032DOI Listing
August 2005

Brief report: autism in individuals with Down syndrome.

J Autism Dev Disord 2005 Oct;35(5):665-73

MRC Child Psychiatry Unit, University of London, UK.

As an off-shoot of a study examining the reliability and validity of an adapted version of the Pre-Linguistic Autism Diagnostic Observation Schedule (A-PL-ADOS), 13 individuals with Down syndrome with IQs ranging between 24 and 48 were administered the Autism Diagnostic Interview-Revised (ADI-R) and the A-PL-ADOS, which are well-validated interview and observational diagnostic measures. Three out of 13 met lifetime criteria on the ADI-R, but none of these three showed behavior that met the criterion for autism on the A-PL-ADOS (although two nearly did so). However, two individuals did meet the A-PL-ADOS criterion and showed behavior that fell only just short of meeting lifetime criteria on the ADI-R. Altogether, 5 individuals with Down syndrome may be considered to show an autism spectrum disorder. Of the remaining 8, some showed a few autistic features, and some showed none. The findings raise both methodological and conceptual issues.
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http://dx.doi.org/10.1007/s10803-005-0010-0DOI Listing
October 2005