The dot-probe task developed by Macleod, Mathews and Tata (1986) is a measure of attentional bias. Recent developments of the task have favoured the use of human faces as stimuli, however, results from this task have been inconsistent. In 2005, Schmukle published very poor reliability estimates for two versions of the dot-probe task using words and situational images as stimuli. The present study tested the reliability of two versions of the test, using photographs of human faces. One version was similar to previous research, while the other was a modification designed to meet a potential methodological issue. Results indicate that both versions tested were unreliable and therefore unsuitable for individual differences research. When considered as a group, however, participants showed consistent attentional bias towards emotional faces in the task similar to previous research, while habituation effects were found in the modified task. This suggests that the two tasks may be used in between-group designs to investigate different aspects of attention to emotional faces
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