We argue that the abortion controversy has one major source - religion
- and two less important ones - attitudes towards sexual permissivene
ss and women's employment. Traditional Christianity promotes oppositio
n to abortion using three distinct modes of moral reasoning: through d
eductive moral reasoning, by the Christian world view's implication th
at abortion violates the sanctity of life and is a rebellion against G
od's design; through authoritative moral reasoning by appeal to Cathol
ic dogma; and through consequentialist moral reasoning, as a means of
control over sexuality and as a means of confining women's activities
to the home. Even aside from Christian belief, adherence to traditiona
l morality promotes opposition to abortion on these consequentialist g
rounds. We posit a model in which religious belief, anti-feminism, sex
ual permissiveness, and attitudes towards abortion are distinct concep
ts (a four-factor model) rather than all simply aspects of a single co
nservatism factor. We develop reliable, multiple item attitude scales;
show that our four-factor model fits the data much better than the on
e-factor alternative; and test our hypotheses on new data from a large
, representative national sample of Australia (N=4540). Using maximum
likelihood structural equation methods, we find that deductive reasoni
ng from Christian belief is the most important source of opposition to
abortion, with strong effects both direct and indirect. Exposure to t
he authority of the Catholic hierarchy is a real but weaker source of
opposition. Consequentialist reasoning from traditional moral views on
sex - partly buttressed by religion, partly independent of it - is al
so influential. But views on women's employment matter only a little,
contrary to received wisdom.