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The effect of neutral and negative colour photographs on children's item directed forgetting

Intentional forgetting is an active process relying on cognitive mechanisms (e.g., rehearsal strategies and inhibition) developing during the elementary school years. Colour photographs might be rehearsed differently in memory than words, and therefore result in a different developmental pattern of intentional forgetting than previously acknowledged. Moreover, negative material is thought to be particularly reliant upon inhibitory mechanisms in order not to be encoded in memory. Thus, children's item-directed forgetting (DF) might develop differently both in relation to colour photographs in general and for negative pictorial stimuli in particular. The aim of the present study was to investigate item DF for colour photographs of neutral and negative valence in sixty-five school-aged children (8–12 years of age). In the present study, a DF effect was revealed irrespective of age for neutral images as well as negative images. Results are discussed in relation to potential mechanisms underlying item DF for colour photographs and how these affect development of intentional forgetting.