Summary |
This category includes work on two main questions: (1) Can morality be given an evolutionary explanation? (2) What implications for moral philosophy would such an explanation have? Work addressing (1) must clearly specify the explanatory target.
An important challenge here is to distinguish morality from related
notions: altruism (biological and psychological), cooperation, prosocial
emotions, and the capacity to follow norms more generally. Such work
must also specify the relevant evolutionary mechanism(s). Options
include kin selection, reciprocity, cultural group selection, sexual
selection, costly signaling, and evolutionary constraint or accident. A
useful broad distinction here is between adaptationist accounts, on
which morality was selected for, and non-adaptationist accounts, on
which morality is a by-product of some other trait(s). Work addressing (2) can be divided into that which considers implications for normative ethics, and for metaethics.
The former is widely claimed to fall foul of the is/ought gap and the
naturalistic fallacy, but the latter is immune to such charges (whatever
they ultimately amount to). Work of the latter sort can be roughly but
usefully divided into vindicating and debunking accounts.
On the former, an evolutionary explanation for morality is at least
compatible with - and may even positively support - the existence of
moral facts and our possession of moral knowledge. On the latter, such
an explanation somehow undermines morality, by giving reason to doubt
the existence of moral facts, or our reliability as moral judgment
makers, or both. |