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Yıl:2012; Cilt: 27; Sayı: 69>> Özet
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Türk Psikoloji Dergisi; 2012;27(69):50-64
Evrimsel Olarak Tehdit Edici Uyarıcıların Değişim Saptama Sürecinde Neden Olduğu Dikkat Yanlılığı ve Yönelme Önceliği
O İyilikçi, S Amado, A Doğan
Ege Üniversitesi, İzmir
Yapılan çalışmada evrimsel açıdan tehdit edici uyarıcıların (tehdit edici hayvanlar) değişim saptama sürecinde bir dikkat yanlılığı yaratıp yaratmadığı incelenmiştir. Deney 1’in sonuçları, gözlemcilerin yanıp sönme görevi sırasında tehdit edici hayvan kategorisinde gerçekleşen değişiklikleri tehdit edici olmayan hayvan kategorisinde gerçekleşen değişikliklere ve diğer tehdit edici olmayan nesne kategorilerinde gerçekleşen değişikliklere göre daha hızlı saptadığını göstermiştir. Üstelik tehdit edici hayvan kategorisi bu değişim saptama üstünlüğüne hiçbir denemede görsel açıdan en belirgin kategori olmadığı halde neden olmuştur. Ayrıca bu değişim saptama üstünlüğünün oluşmasının nedeninin tehdit edici hayvanların gözlemcilerin dikkatini tutması değil yakalaması olduğu bulunmuştur. Deney 2’de gözlemcilerin tehdit edici hayvanlardaki değişikliği hızlı saptamasının, tipik olarak gözlemcilerin tehdit edici hayvanlara olan ilk odaklanmalarını diğer kategorilere göre daha hızlı yapması olduğu bulunmuştur.
Evolutionary Threatening Stimuli Cause Attentional Bias and Orienting Priority in Change Detection Process
This study investigates whether evolutionary threat related stimuli (threatening animals) cause an attentional bias in the change detection process. The results of Experiment 1 showed that observers detected changes to threatening animal category more rapidly than changes to non-threatening animal and other non-threatening object categories in the flicker task. Moreover threatening animal category causes this change detection superiority although it is not visually the most salient category in any trial. It was also found that this change detection superiority occurs because threatening animals capture rather than hold observers attention in the flicker task. The findings of Experiment 2 indicated that observers detect changes to threatening animals faster since they typically made their fi rst fi xations to threatening animals more rapidly than other categories.

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