A three-item scale measuring the extent to which a person is in a state of emotional neutrality -- feeling indifferent and lacking any particular emotion at the time of assessment. Items are rated on a seven-point format with anchors of did not experience at all (1) and experienced very intensely (7). Cavanaugh, Bettman, and Luce (2015) used the scale as a manipulation check in the pretest for Study 4 (n = 147 college students), asking participants to indicate the extent to which they experienced particular feelings while watching an advertisement. The authors noted that items were drawn from the existing literature but did not identify the specific source. Internal consistency was good: alpha = .86. The successful manipulation provided limited evidence of the scale's predictive validity.
Cavanaugh, L. A., Bettman, J. R., & Luce, M. F. (2015). Feeling love and doing more for distant others: Specific positive emotions differentially affect prosocial consumption. Journal of Marketing Research, 52(5), 657–673.
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