This study examines eight rival hypotheses concerning determinants of
state incarceration rates in 1984. Multiple measures of crime, economi
cs, social characteristics, demographics, ideology and culture, senten
cing and parole reforms, alternatives to corrections, and institutiona
l conditions are evaluated in light Of their ability to account for cr
oss-sectional variation in-incarceration practices. Initially the anal
ysis reveals that all eight hypotheses are associated with imprisonmen
t. However, in light of statistical controls, the explanatory power of
most variables is greatly diminished or found to be indirect rather t
han direct. The two factors having the greatest direct impact On incar
ceration are crime and culture.