Appraising Measurements of Affective Polarisation in Multiparty Systems: Comparative Insights from the Low Countries

Appraising Measurements of Affective Polarisation in Multiparty Systems: Comparative Insights from the Low Countries Affective polarisation is increasingly viewed as a threat to democratic societies. However, the lack of consensus on measurement approaches hinders our understanding. This study assesses the concurrent validity of several affective polarisation measurements, challenging existing US-centric measurement approaches and advocating for a more nuanced understanding tailored to Europe’s diverse multiparty contexts. It leverages data from Belgium and the Netherlands (N = 2,174), two ideal-type multiparty systems to test various measurements of affective polarisation. Its novelty arrives from its examination of like-dislike and social distance measures in conjunction with social avoidance and out-group dislike. The findings reveal that while these measurements share common drivers, their outcomes differ substantially. Only out-group dislike and social distance are linked to decreased satisfaction with democracy, whereas affective polarisation as the difference between in- and out-group affect seems to stimulate voting intentions. Hence, this study cautions researchers against interchangeably using different measurements.