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Yıl:2007; Cilt: 10; Sayı: 20>> Özet
TAM METİN
Türk Psikoloji Yazıları; 2007;10(20):1-17
Görgü Tanıklığında Bellek Hataları: Olay Sonrası Bilginin ve Tuzak Soruların Hatırlama ve Kaynak İzleme Üzerindeki Etkisi
G Alpar, N Er, FU Boyraz
Adile Sadullah Mermerci Polis Meslek Eğitim Merkezi, Ankara
Bu çalışmada, bir hırsızlık olayına ilişkin olay sonrası bilgi ve tuzak soruların görgü tanıklarının hatırlama ve kaynak izleme performansı üzerindeki etkisi incelenmiştir. Bu amaçla deneylerin çalışma aşamasında katılımcılara 50 olay slaytı izlettirilmiş ve olayın kritik maddeler açısından değişimlenmiş; doğru, hatalı ve genel olarak anlatıldığı olay sonrası hikaye okutulmuştur. Ardından tuzak soruların bulunduğu bir hatırlama testi ile katılımcıların bellekleri test edilmiştir. Katılımcılar daha sonra hatırlama testinde verdikleri yanıtları polis raporundan mı, yoksa slaytlardan mı hatırlıyor olduklarını değerlendirdikleri bir kaynak izleme yapmışlardır. Belirttikleri kaynaktan ne kadar emin olduklarını ise, 7 boyutlu Likert tipi bir ölçek üzerinde değerlendirmişlerdir. Katılımcıların hatırlama testinden aldıkları hata puanları, “slayttan hatırlıyorum” karar yüzdesi ve bilginin kaynağından emin olma derecesi üzerinden analiz edilmiştir. Sonuçlar, olay sonrası hikaye temel etkisinin anlamlı olduğunu göstermiştir. Görgü tanıklarının olay sonrası bilginin kaynağı ile kendi gözlemlerini ayırt etmede zorlandıklarına, olay sonrası bilginin kendi gözlemleri olduğuna inandıklarına işaret etmiştir.
Mistaken Memories in Eyewitness Testimony: Effects of Postevent Information and Misleading Questions on Recall and Source Monitoring
In this experiment, effects of postevent information and misleading questions related to a real criminal event on eyewitnesses’ recollections and source monitoring decisions were investigated. In the studying phase of the experiment, participants were presented 50 event slides and then they read a postevent narrative manipulated through true, false and neutral information. In the testing phase, their memories for the criminal event were tested through misleading questions. Then they made their source monitoring decisions that whether they remember their answers form the slides or form the narrative and they showed their certainty level on a 7 dimensional Likert-type scale. Analysis on false decisions, source monitoring and certainty level of participants showed postevent information main effect and recall test consisted of misleading questions has effects on the source monitoring and certainty level. This means that eyewitnesses may confuse discriminating the source of their recollections and believe that the postevent information is their own observations.

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