Reliability and correlation of interest inventories: Strong interest inventory (SII) and self-directed search (SDS)

Abstract

The study examined the reliability and correlation of the strong interest inventory (SII) and self-directed search (SDS). In Iran, these two instruments are relevant for assessing interest. Thus, college students in the University of Isfahan in Iran were taken as participants in the university to examine the reliability and correlation of SII and SDS. The mean internal consistency coefficients for the SII and SDS were 0.90 and 0.86, respectively, and mean test-retest reliability for SDS subscales was high. Mean correlation between the same SII and SDS scales of participants who took both versions was high. For this group, the Realistic, Social, Investigative, Artistic, conventional and enterprising were subscales that produced the configuration of a RIASEC-order hexagon. These results highly support the further use of SII and SDS. Key words: Strong interest inventory (SII), self-directed search (SDS), college students, University of Isfahan, Iran.