For example, he writes, "If a person evaluates his running ability, he will do so by comparing his time to run some distance with the times that other persons have taken." According to Festinger, however, there are two types of social comparison: upward and downward.
People asked to explain why the robots were in a particular category were more likely than people who just studied the items to find rules that applied to all of the robots in a category.
What kinds of social media networks are most effective for promoting healthy levels of physical activity, competitive interactions or supportive social contacts? The most encouraging finding was that social comparison — that is, friendly competition — was really effective at improving people’s levels of physical activity.