Children's representations of the pattern of daily activities.

An important part of humans' knowledge of time depends on forming mental representations of recurrent temporal patterns. This study was an attempt to characterize the representations of one such pattern--the relative times of occurrence of daily activities such as waking, lunch, dinner, and going to bed in 4-9-year-old children. The results of 3 experiments showed that by 5 years of age children can judge the backward order of daily activities, judge the forward order from multiple reference points within the day, and evaluate the lengths of intervals separating daily activities. By about 7 years, children can also judge backward order from multiple reference points. These findings impose constraints on the types of representational models that can explain young children's knowledge of this pattern. The results also show that certain operations can be performed on this content about 6 years earlier than on 2 other temporal contents--the patterns of days of the week and months.