The phrase "a human propensity" is correct and usable in written English.
It can be used to describe a natural tendency or inclination that humans have towards certain behaviors or actions.
Example: "The study revealed a human propensity for forming social bonds, even in isolated environments."
Alternatives: "a human tendency" or "a human inclination".
IN "The Origins of Political Order" Francis Fukuyama, an American political scientist, traces a centuries-long battle between a "natural human propensity to favour family and friends", which when embedded in political systems is called patrimonialism, and the "countervailing incentives" of a meritocratic state, the rule of law and accountable government.
A third psychological phenomenon that makes direct talks without a strong mediating role more difficult is a natural human propensity to attach greater weight to prospective losses than to prospective benefits of equal magnitude.
The current consensus is that there exists a strong human propensity to assist kin and near neighbors, an indifference to or hostility towards strangers; that there are divergent reproductive strategies in males and females that favor promiscuity and evasion of parental care in males and greater sexual selectivity and nurturance in females.
And, to add insult to injury, there is a natural human propensity toward complacency when progress is being made and a disease is perceived to be under control.
Were totalitarianism and industrial genocide developmental diseases of the 20th century or manifestations of a deeper human propensity for evil?
It is a reflection of the way human beings directly engage their world, the result of a bare human propensity to see some things as naturally grouped with others or as usefully conceived in comparison with others.
However, since time immemorial, a natural human propensity has been to let go of the language of the "old country".
So far, all we know is that Facebook has unleashed, for better or worse, an apparently human propensity to exchange information about our lives.
As the British psychiatrist John Bowlby, who dismissed Freud's call for separation, pointed out, attachment is a healthy and lifelong human propensity.
