The aim of the present study was to examine the Ackerman’s model of traits
categorisation and to define the complexes of intellectual abilities and personality traits
which determine the vocational interest of adolescents. Thereby it was examined the
predictive value of personality traits and intelligence for each of vocational interests and
the way on which the participants were grouped based on the results achieved.
The research was carried out on 306 pupils (M= 75, W= 208; 28 didn’t fill in the sex)
from 2nd till 4th class of the secondary schools in Zagreb which were administered The
General Aptitude Battery Test (GABT), Big-Five Inventory (BFI) and Self-Directed
The results obtained show that personality traits were more significant predictor than
abilities in predicting artistic, social, enterprising and conventional interests since they
predict 14-41% of criterion variance in the second step while sex in the first step explains
5-7% criterion variance (except for enterprising and conventional interests where sex is
not significant). Realistic interests were predicted (37% variance) by openness to
experience, consciousness, low agreeableness, spatial intelligence and sex. Investigative
interests were predicted (28%) by the same personality traits as realistic ones, verbal
intelligence and sex. Significant predictors of artistic interests (46%) were openness to
experience and sex. Social interests were predicted (26%) by extraversion, openness to
experience and lower spatial intelligence. Enterprising interests were predicted (29%) by
extraversion, lower agreeableness and verbal intelligence. Conventional interests were
significantly predicted (20%) by extraversion and consciousness.
Factor analysis of traits (intelligence factors, personality traits and vocational interest) on
a sample of this research has yielded five-factor structure which explained 64% of
variance: first factor was saturated by extraversion, enterprising, conventional and social
interests, second factor was saturated by perceptual speed, numerical, spatial and verbal
abilities, third factor was saturated by openness to experience and artistic and social
interests, fourth factor was saturated by spatial ability and realistic and investigative
interests and fifth factor had loadings on consciousness, agreeableness, emotional
stability (low neuroticism) and extraversion.
Results of this research contribute to more simple and easier data interpretation about
intelligence, personality and vocational interests gathered during vocational guidance
process and at the same time they contribute to better understanding of interindividual
differences in work behavior.