a trend towards significancep = 0.056
For HR and RMSSD, the interactions also remained non-significant, with the interaction between pleasantness and familiarity showing a trend towards significance for HR (β = 0.15, SE = 0.08, p = 0.056) and RMSSD (β = − 0.01, SE = 0.00, p = 0.074; all other p s’ > 0.621).