This study adopted descriptive survey design of ex post type to
examine the extent to which self-esteem, parental involvement and
religiosity predicted risky sexual behaviours among female in-school
adolescents in Delta state, Nigeria. Four hundred adolescents whose age
ranged from 15 to 19 (SD=17.37) were drawn using Multi-stage sampling
technique. Three standardized and one researcher developed self-report
measures were used for data collection. Pearson Product Moment Correlation
and regression statistics were used to analyze data at 0.05 level of
significance. Self-esteem, parental involvement and religiosity have negative
relationship with participants’ risky sexual behaviours. The independent
variables accounted for 30.3% of the variance in prediction of risky sexual
behaviour. Self-esteem made the highest contribution to the prediction of
risky sexual behaviour of adolescents while parental involvement made the
least contribution. The need for Programme designers, sexuality educators,
and Counsellors to incorporate these variables into activities to delay sexual
debut by adolescents was implied from this outcome.