


Additionally, bias and ambiguity in the questionnaire can affect the research results significantly. Their findings leave a research question whether the results are valid, as participants may perceive a written questionnaire differently. Previous works observed user experience issues of parallax scrolling merely based on subjective questionnaires. Parallax scrolling provides 3D perception on a web page. Parallax scrolling technique is being devoted as a unique and an innovative trend in the web design. natural mapping, perceived usefulness) when it comes to improving the user experience of the product presentation websites. vividness, coolness) rather than cognitive heuristics (i.e. The practical contribution of the study is it provides a roadmap to web developers to emphasize affective heuristics (i.e. The theoretical contribution of the study is it examined the interface feature (dimension and parallax scrolling) on both user perceptions and user actions using the TIME model. User engagement is in turn associated with positive attitudes and behavioral intentions toward the website and the product. A 2 (dimension) x 2 (modality interactivity) between-subjects (N = 295) online experiment revealed that parallax scrolling influences user engagement through two routes: the cue route (perceived coolness, perceived vividness) and the action route (natural mapping, perceived ease of use). Dimensionality and scrolling (modality interactivity) are two major characteristics of this technique. Parallax scrolling allows the object displayed in the foreground to move faster than the object displayed in the background, so as to create a 3D effect. Parallax scrolling is a popular web technique used widely in product presentation websites, but its effect on user experience is unknown.
