“…Evidence for the impact of warning labels comes from their use on tobacco products, which suggests that both text- and image-based warnings can affect a range of effectiveness outcomes, including cessation-related behaviours ( Hammond et al, 2006 ; Borland and Hill, 1997 ; Borland, 1997 ; Hammond et al, 2004 ; Hammond et al, 2003 ; Ngo et al, 2018 ). Image-based labels appear to exert greater effects ( Brewer et al, 2016 ; Noar et al, 2017 ; Noar et al, 2016 ; Noar et al, 2015 ; Evans et al, 2015 ; Romer et al, 2017 ; Evans et al, 2018 ), being more noticeable and eliciting greater negative emotional reactions than text-only labels ( Evans et al, 2015 ; Romer et al, 2017 ; Hammond et al, 2007 ; Magnan and Cameron, 2015 ; Hall et al, 2017 ). Indeed, the most effective labels are those which include images that elicit a strong negative emotional response ( Hammond et al, 2006 ; Hammond et al, 2004 ; Hammond et al, 2003 ; Cho et al, 2017 ; Nonnemaker et al, 2014 ).…”