In Posner's letter identification experiment, why does it take longer, on average, to detect the difference between the pair M and N compared to the pair M and O in the physical comparison task? OM and N are more similar at the physical level O Man N are more similar at the semantic level OM and N are more distinct at the semantic level OM and N are more distinct at the physical level
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Posner, along with his colleagues, tried to understand how visual information in the brain is represented - pictorially (like an image) or in a more abstract way. So, they carried out an experiment, where they presented alphabet letters to the participants. They had to report whether the presented letters were similar or not.
The experiment found that participants took longer time to identify the differences between certain letters like M and N, whilst it took lesser time for them to identify the differences between certain other letters like M and O. In order to identify why this is the case, let us read further below.
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