Happiness or Addiction
The psychological consequences of Facebook use remain controversy since most previous studies used vague and non-psychological-theory-driven indicators. To better understand the potential consequences of Facebook use, this study developed the Facebook Psychological Involvement Scale (FPIS).With 682 Taiwanese university students as subjects, this study analysed the reliability and validity of the scale using structural-equation-modeling (SEM). Results showed that FPIS had strong reliability and validity. Besides, the correlations between FPIS and internet addiction/positive-psychological states (PPS) were significantly stronger than those of usage time and number of Facebook friends, indicating that FPIS is a more effective predictor of the psychological consequences of Facebook usage.