The Purpose-in-Life test in an inmate population: an empirical investigation.

This study examined the relationship of the Purpose-in-Life test to a number of variables in a sample of 48 inmates. The PIL was shown to be a reliable and valid instrument and correlated significantly and positively with measures of the self-concept, self-esteem, internal locus of control, and two EPI scales: Plans and Organizes Things and Carefree. Also found were significant relationships between PIL scores and age, IQ, and family relations. When compared to normal samples, inmates scored significantly lower on meaning and purpose in life. These data support the continued use of the PIL in research and applied settings.