Still doesn’t seem like anything that all of us don’t already know. Babies recognize emotions, in adults or other babies. This isn’t news to anyone, except people who haven’t spent any time around babies or scientists looking for grant money.
Can the truth ever be somewhere between, that it may have been an excessive expenditure, but it did manage to quantify a psychological phenomenon that “everyone knows” (i.e. only those who actually care about normal child upbringing, a smaller and smaller set)? Why so cynical? If the cynicism is withheld, this could be viewed as another opening against the advocates of early infanticide.