The purpose of this study is to examine the effects of Facebook and LINE on the social capital and wellbeing of Taiwanese adults aged 50 and older, based on data obtained from the 2020 Taiwan Communication Survey (TCS). The results showed that the use of Facebook by the sample of 920 respondents had a significant positive effect on both bonding and bridging social capital. However, their use of LINE had a positive effect only on bridging social capital. The results also confirmed the hypothesis that although the use of Facebook and LINE by Taiwanese older adults has no direct effect on wellbeing, it affects wellbeing through the mediation of social capital. The implications of the findings are discussed, and recommendations for future research are provided.
