Finally, in this section, note that even a high baseline of well-being can be associated with negative as well as positive affective experiences. Diener and Seligman (2002) identified subsets of students who were either very happy or very unhappy, assessed through a range of indicators across several weeks. In addition to specifying behavioral differences (e.g., very happy individuals spent more time in social encounters), they reported that some periods of unhappiness were experienced in all cases-on as many as half the days for the most happy subgroup. A high level of baseline happiness does not exclude periods of low subjective well-being.