What determines instant messaging communication? Examining the impact of person- and situation-level factors on IM responsiveness

Acknowledging that the way mobile communication is used is shaped by socially negotiated social norms, this study examined the factors that impact instant messaging (IM) communication at the person and situation levels using the experience sampling method (ESM). We measured how the characteristics at the person level (i.e., availability and responsiveness preferences), contextual factors (i.e., location and copresence of others), and message-related attributes (i.e., sender and chat type) impact users’ responsiveness in IM communication. The study empirically investigated a sample of 90 smartphone users who completed 820 ESM protocols regarding their use of the messenger service WhatsApp. The results of the multilevel analyses revealed that users’ responsiveness in IM communication is affected by person- and situation-level factors, but the latter factors were found to have a much stronger impact. The effect of specific influential factors is discussed in detail.