Using the diary method, the correlation between daily mood and everyda
y activities is analyzed. Positive and negative affect were used as in
dicator of daily mood. Duration of social activities and resting durin
g the day were used as indicator of daily activities. A total of 55 el
derly persons kept a activity and mood diary for at least 50 days. The
data were analyzed interindividually (using regression analyses) and
intraindividually (using time series analyses). While positive affect
and duration of social activities correlate positively in both inter-
and intraindividual perspective, there is a relationship between negat
ive affect and duration of rest only in interindividual perspective. T
heoretical and practical implications of the results are discussed.