“…The most challenging question when tackling the issue of personalizing intergroup interventions is: what are the key mechanisms that would enable us to match individual difference parameters to the most effective intervention? Relying mainly on evidence from persuasion literature (Haddock, Maio, Arnold, & Huskinson, ; Hirsh et al, ; Moon, ) and some very initial evidence from the more recent digital mass persuasion literature (Kosinski, Matz, Gosling, Popov, & Stillwell, ; Matz, Kosinski, Nave, & Stillwell, ; Matz, Segalin, Stillwell, Müller, & Bos, ), we suggest two mechanisms: a content‐based mechanism (i.e., level of message congruency) and a needs‐based or motivational mechanism. In addition, we suggest an emotional mechanism, which follows previous conceptualization and research on indirect emotion regulation interventions (Halperin, , ).…”