A systematic review and meta‐analytic confirmatory factor analysis of the perceived stress scale (PSS‐10 and PSS‐14) von Yılmaz Koğar, Esin, Koğar, Hakan

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A Bifactor-ESEM Representation of the Multidimensional Scale of Perceived Social Support von Yılmaz Koğar, Esin, Koğar, Hakan

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Using a bifactor exploratory structural equation modeling framework to examine the factor structure of the Depression Anxiety and Stress Scales-21 von Kogar, Hakan, Yilmaz Kogar, Esin

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Examination of Factors Affecting PISA 2012 Mathematical Literacy through Mediation Model von Kogar, Hakan

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Effects of Various Simulation Conditions on Latent-Trait Estimates: A Simulation Study von Kogar, Hakan

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A validation study of the self-compassion scale-short form (SCS-SF) with ant colony optimization in a Turkish sample von Koğar, Hakan, Koğar, Esin Yılmaz

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The structure of the multidimensional scale of perceived social support: a meta-analytic confirmatory factor analysis von Koğar, Hakan, Yılmaz Koğar, Esin

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Does gender and social support matter in the associations between loneliness, resilience, and psychological distress? von Koğar, Hakan, Yılmaz-Koğar, Esin

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Corrigendum on: A validation study of the self-compassion scale-short form (SCS-SF) with ant colony optimization in a Turkish sample von Editorial, E

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INVESTIGATION OF SCIENTIFIC LITERACY ACCORDING TO DIFFERENT ITEM TYPES: PISA 2015 TURKEY SAMPLE von YILMAZ KOĞAR, Esin, KOĞAR, Hakan

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Validity and reliability study in undergraduate healthcare students towards the solution of a neglected problem in working life: Attitude scale towards patients with chronic pain von Sucu Çakmak, Nefise Cevriye, Çalışkan, Nurcan, Koğar, Hakan

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PISA 2012 Matematik Okuryazarlığını Etkileyen Faktörlerin Aracılık Modeli ile İncelenmesi von Koğar,Hakan

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Üniversite Öğrencilerinin Sosyal Beğenirlik Tercihlerinin Yargıcı Kararları ile Ölçeklenmesi von Gelbal,Selahattin, Koğar,Hakan

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Children's Views Toward Their Peers With Disabilities During Early Childhood von Tekerci, Hacer, Kogar, Hakan

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An Examination of Parametric and Nonparametric Dimensionality Assessment Methods with Exploratory and Confirmatory Mode von Kogar, Hakan

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Yüksek Lisans Programına Giriste Öğrencilerin Sınıflandırılma Doğruluğunun İncelenmesi: Gazi Üniversitesi Örneği von Sayın,Ayfer, Koğar,Hakan

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Yetişkin Eğlence Eğilimi Özeliği Ölçeği Türkçe Formunun Psikometrik Özelliklerinin İncelenmesi von Keleş,Sadiye, Yurt,Özlem, Koğar,Hakan

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Infant Toddler Education Belief Scale for Pre-Service Early Childhood Educators (ITEBS4PECES): Validity and Reliability Analysis von Ünlü-Çetin, Senil, Kogar, Hakan

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The Examination of Measurement Invariance and Differential Item Functioning of PISA 2015 Cognitive Tests in Terms of the Commonly Used Languages von Sekercioglu, Güçlü, Kogar, Hakan

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TIMSS 2015 sekizinci sınıf matematik başarı testinin OECD ülkelerine göre ölçme değişmezliğinin incelenmesi von Öncü,Özge, Koğar,Hakan

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