Interactivity Effects on Single-Handed Interaction: An Empirical Investigation of Thumb Movement and Touch-Based Interaction Techniques for Smartphones

Thepurposeofthisstudywastoexaminetheeffectsofinteractiontechniques(e.g.,swipingand tapping)andtherangeofthumbmovementsoninteractivity,engagement,attitude,andbehavioral intention in single-handed interaction by focusing on interactions with mobile devices such as smartphones. This study adopted the perspective of the hybrid definition of interactivity, which includestheinteractivityeffectoutcomesmediatedbyperceivedinteractivity.A2(technological features:swipingandtapping)×2(rangeofthumbmovement:wideandnarrow)between-participant experimentwasconducted.Theresultsshowedtherangesofthumbmovementtohavesignificant effectsonperceivedinteractivity,engagement,attitude,andbehavioralintention,whereasnoeffects wereobservedforinteractiontechniques.Anarrowrangeofthumbmovementhadmoreinfluence ontheinteractivityoutcomes,ratherthanawiderangeofthumbmovement.Theimplicationsofthe findingwerediscussed. KEywoRdS Engagement, Interactivity, Mediated Moderation, Single-Handed Interaction