Table 1. Summary of main analyses for the different categories of dependent variables (Studies 1 and 2).

Category of dependent variables	Main analysis
Relationship measures (Przybylski and Weinstein [12])	Multilevel analysis: random intercept model with mere presence of smartphone as level-2 fixed effect, and gender, age, and positive affect covariates as level-1 fixed effects
Creativity scores of group toys rated by peer judges	t test: mere presence of smartphone as predictor (no covariates)
Remote associates test (Study 1)	Multilevel analysis: random intercept model with mere presence of smartphone as level-2 fixed effect (no covariates)
Self-assessments of creativity	Multilevel analysis: random intercept model with mere presence of smartphone as level-2 fixed effect (no covariates)
Creative measures	Multilevel analysis: random intercept model with mere presence of smartphone as level-2 fixed effect (no covariates)