Hofmans, J., Theuns, P., Baekelandt, S., Mairesse, O., Schillewaert, N., & Cools, W. (2007). Bias and Changes in Perceived Intensity of Verbal Qualifiers Effected by Scale Orientation. Survey Research Methods, 1(2), 97-108. https://doi.org/10.18148/srm/2007.v1i2.79