BACKGROUND
Need for cognition (NFC) is among the most studied personality traits in psychology. Despite its apparent relevance for engaging with technology and use of information, it has not been studied in the context of self-monitoring systems and wearables for health. The reported study is the first to explore the relationship between this trait and commercial self-monitoring systems among existing users.
OBJECTIVE
This study aimed to explore the effect of NFC levels on selection of self-monitoring systems and evaluation of system features self-monitoring and feedback as well as perceived credibility and perceived persuasiveness. We also assessed perceived behavior change in the form of self-reported activity after adopting the system.
METHODS
Survey data was collected in (blinded) in October 2019 among university students that had used a digital system to monitor their physical activity at least for two months. A Web-based questionnaire had three 3 parts: details of system use, partially randomly ordered theoretical measurement items, and user demographics. The data was analyzed with structural equation modelling. The effect of NFC was assessed both as three groups (low, moderate, high) and as continuous moderator variable.
RESULTS
There were significantly higher scores among high NFC individuals for all tested system features. NFC also had some effect on system selection. Perceived credibility is crucial for these systems, but relationships with credibility differ for low and high NFC individuals. For those with low NFC, it increases the persuasiveness of the system, but this effect is absent from high NFC individuals. For high NFC users, credibility is strongly related to self-monitoring activity and is perhaps continuously evaluated during prolonged use. The relationship between perceived persuasiveness and self-reported activity after adopting the system was very strong only for high NFC individuals.
CONCLUSIONS
Individuals’ system choices seem to reflect their intrinsic motivations to engage with rich data, and commercial systems might themselves be a tailoring strategy. Important characteristics of the system like perceived credibility have different role depending on NFC levels. Our data demonstrate that NFC as a trait differentiating information processing has several implications for selection, design and tailoring of self-monitoring systems.