Mothers' (N = 106) ratings of rules and child compliance for their young ch
ildren, and the effects of child temperament and mothers' justifications fo
r rules on ratings of rules and compliance, were examined longitudinally at
14 and 24 months. Rules for young toddlers pertained primarily to safety,
safeguarding property, interpersonal issues, and, as children got older, co
nventions. As expected, mothers endorsed moral justifications for interpers
onal rules, prudential justifications for safety and property rules, and co
nventional and psychological justifications for conventions. Compliance inc
reased significantly with age and was greater for property, safety and inte
rpersonal behaviors than for other issues. Parent-rated child temperament a
nd harm justifications predicted mothers' ratings of rules and child compli
ance, and ratings of rules, compliance, and justifications demonstrated con
tinuity over time.