“…On a related point, whereas electricity consumption was-for practical reasons-assessed on the household level, ecological lifestyle was measured for individuals (i.e., the person holding the contract with the EPC). As couples living in one household are sometimes found to report quite differential engagement in specific environmentally protective activities (see, for example, Seebauer, Fleiß, & Schweighart, 2016), this discrepancy in level of measurement creates some uncertainty regarding the actual magnitude of the relation between people's ecological behavior and electricity consumption (Yang, Shipworth, & Huebner, 2015). However, it is likely to have deflated rather than increased the correlation of interest.…”