Ratings rise over time because they feel easier to make - This effect emerged with judges on a dance show, with teachers who give higher grades the longer they teach a course, and in the lab. People new to an evaluation task may be more critical than those who have been doing it for longer.

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Ratings rise over time because they feel easier to make - This effect emerged with judges on a dance show, with teachers who give higher grades the longer they teach a course, and in the lab. People new to an evaluation task may be more critical than those who have been doing it for longer.