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The assessment of information systems (IS) benefits is an important practical problem in IS investment appraisal. After briefly reviewing the nature of IS benefits, we argue that an incremental measurement approach can help an organisation obtain quantitative estimates of expected IS impacts on business performance. Such an approach should start from quantifiable benefits directly attributable to the information system and then gradually consider more intangible and indirect effects. We suggest that Business Process Simulation can be an effective technique in applying this approach and we present a methodology that incorporates incremental, iterative business process modelling and simulation into five practical steps. To illustrate this approach, we present a case of measuring the potential improvements in inventory management introduced by electronic data interchange and discuss issues of feasibility and directions for further research and development.

Recently, short-form video apps, as a new form of social media, have attracted users and rapidly emerged by virtue of their personalized recommendation algorithms, interesting forms of live interaction, and diverse interactive functions, which may lead to excessive use. From the perspective of IT affordances, this study combines the cognitive-affective-behavioral model and perceived values theory to examine the formation mechanism of the excessive use of short-form video apps.

We surveyed a total of 351 users who have used Tiktok, a typical short-form video app, and used their questionnaires to test the research model.

Searching affordance has a positive impact on perceived information value and perceived entertainment value. Furthermore, meta-voicing, recommending, and livestreaming affordance have a positive impact on perceived information value, perceived entertainment value, and perceived social networking value, which also have a positive impact on negative affect anticipation. In addition, negative affect anticipation is significantly positively correlated with excessive use.

In terms of theory, this study introduces the theory of IT affordances and perceived values into the cognitive-affective-behavioral model, to the best of our knowledge, for the first time. Furthermore, it conducts situational research on the formation mechanism of excessive use of short-form video apps and makes up for the lack of studying of excessive use behavior from the perspective of technical factors.