The stability of social interaction.

In a study of the stability of social interaction, participants maintained a social interaction diary, the Rochester Interaction Record (RIR), for 41-week periods during their freshman year at college. Stability was operationalized in 3 ways: absolutely, in terms of the similarity across the 4 periods of amount of interaction and of reactions to interactions: relatively, in terms of correlations between interaction measures taken at different times; and in terms of the stability of social networks, defined as the consistency across time of participants' close friends. Social interaction was found to be more stable over shorter periods of time than over longer periods, and stability increased over time