We already know that there is universal "preference" for harmony over dissonance. "Sad" music more often uses dissonance, and "happy" music is often made to sound pleasing by emphasizing clean intervals.
Basically, this finding is like discovering that babies prefer sweet flavors over bitter ones.
Doktor-S-Freud t1_j3ulio9 wrote
Reply to Happy rather than sad music soothes newborns — findings suggest that newborns do react to emotions in music, and that responses to music are present at birth by marketrent
We already know that there is universal "preference" for harmony over dissonance. "Sad" music more often uses dissonance, and "happy" music is often made to sound pleasing by emphasizing clean intervals.
Basically, this finding is like discovering that babies prefer sweet flavors over bitter ones.