Do Digital Natives and Digital Immigrants Type Differently? A Kinematic and Perceptual Validation of Smartphone Typing Stimuli for Action Observation Research.

The generational divide between Digital Natives (DN), who grew up immersed in technology, and Digital Immigrants (DI) who adapted to it later in life may manifest in kinematically distinct typing behavior. The question of whether these kinematic differences are perceptually accessible to naive observers and how they manifest in explicit judgments was addressed through validating 12 video stimuli containing 4 actors, two of each group (DN, DI). Kinematic differences were assessed through Wilcoxon analysis. A group of 37 observers were recruited to judge the video clips to assess perceptual differences through ratings on perceived digital skill, age, and gender. Kinematic data were extracted using Kinovea 2-D tracking. Wilcoxon analysis showed significantly higher mean squared jerk (MSJ), mean absolute acceleration and mean speed for both thumbs in DN than DI with perfect rank- separation for MSJ (r = 1.000). Speed corrected MSJ and median jerk squared robustness measures showed comparable results. Observers rated DN as more digitally skilled and younger on video level (r = 1.000) and observer level analysis (r = .871). Strong correlations were found between kinematic measures and observer ratings with digital skill being the strongest (ρ = .937 for MSJ). The present study concluded that the stimuli were sufficiently kinematically and perceptually different and that the findings carry broader implications for future research investigating how sensorimotor history shapes typing behavior and what constitutes typing expertise.