From Pope St. John Paul II’s encyclical Veritatis Splendor (1993):
Side by side with its exaltation of freedom, yet oddly in contrast with it, modern culture radically questions the very existence of this freedom. A number of disciplines, grouped under the name of the “behavioural sciences”, have rightly drawn attention to the many kinds of psychological and social conditioning which influence the exercise of human freedom. Knowledge of these conditionings and the study they have received represent important achievements which have found application in various areas, for example in pedagogy or the administration of justice. But some people, going beyond the conclusions which can be legitimately drawn from these observations, have come to question or even deny the very reality of human freedom.
Mention should also be made here of theories which misuse scientific research about the human person. Arguing from the great variety of customs, behaviour patterns and institutions present in humanity, these theories end up, if not with an outright denial of universal human values, at least with a relativistic conception of morality.
— Veritatis Splendor 33