PSYC 2650 Lecture Notes - Lecture 7: Stroop Effect, Visual Search
3 Mar 2016
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Document Summary
Pop out effect: the item that needs identification can be quickly detected because of salient features. When we are searching for an item with salient features (different color, height or distance to other items), we can perform a so-called feature search. When we perform a feature search, we simply scan the environment for the feature or features for which we are searching. Because of the salient features of the item, it actually becomes almost impossible to ignore the item in our search. When searching for two features together (green circle) in the midst of distractors, which are similar on one feature (green + green circles), it becomes harder to detect the item. In this case we have to perform a conjunctive search: we search for an item, which has a certain combination (conjunction) of features. Feature integration theory (fit): initially we process individual features of a visual stimulus such as color, size shape etc.
