A closer look at the size of the gaze-liking effect: a preregistered replication

This study is a direct replication of gaze-liking effect using the same design, stimuli and procedure. The gaze-liking effect describes the tendency for people to rate objects as more likeable when they have recently seen a person repeatedly gaze toward rather than away from the object. However, as subsequent studies show considerable variability in the size of this effect, we sampled a larger number of participants (<i>N</i> = 98) than the original study (<i>N</i> = 24) to gain a more precise estimate of the gaze-liking effect size. Our results indicate a much smaller standardised effect size (<i>d</i>_z= 0.02) than that of the original study (<i>d</i>_z = 0.94). Our smaller effect size was not due to general insensitivity to eye-gaze effects because the same sample showed a clear (<i>d</i>_z = 1.09) gaze-cuing effect – faster reaction times when eyes looked toward vs away from target objects. We discuss the implications of our findings for future studies wishing to study the gaze-liking effect.