Structure of interest in a Caribbean sample: Application of the Personal Globe Inventory

The structural validity of the Personal Globe Inventory (PGI, Tracey, 2002) as applied to a Caribbean sample of university students in Jamaica (N = 103) and Trinidad (N = 118) was examined. The fit of the data to Holland's six-type RIASEC, the PGI eight-type model, and the PGI spherical structure was examined using the randomized test of hypothesized order relations. The results demonstrated that the circular structure (i.e. RIASEC and the eight-type model), unlike the spherical structure, fits the Caribbean data well. No structural differences were found between gender and nationality. Further examination of the cultural perception of prestige in a Caribbean sample is warranted. Overall, the results support the structural validity of the PGI in Caribbean applications.     

Spherical model of interests in Croatia

In order to analyze the validity of spherical model of interests in Croatia, three Croatian samples of primary school students (N = 437), secondary school students (N = 540) and university students (N = 630) were administered a translated version of the Personal Globe Inventory (PGI, [Tracey, T.J.G. (2002). Personal Globe Inventory: Measurement of the spherical model of interest and competence beliefs Monograph. Journal of Vocational Behavior 60, 113–172.]). Three aspects of model validity were analyzed: the three-dimensional underlying structure of interest items, spherical arrangement of interest scales and accurate gender mean differences in interests. Principal component analysis confirmed the existence of three substantial factors underlying interest items, whose orientation and meaning is moderately related to theoretical one. Randomization test firmly approved the spherical representation of interest scales and its structural stability across different age and gender groups. Gender differences in interest were close to previous findings and logical expectations. Results have shown firm evidences of validity and gender and age universality of spherical model in Croatian adolescent and young adult samples.     

Relating the Spherical representation of vocational interests to the HEXACO personality model

The present study extends previous research on interests–personality relations by comparing recent models of vocational interests (using the Personal Globe Inventory; PGI, Tracey, 2002) and personality (using the HEXACO-PI-R; Ashton, Lee, & de Vries, 2014) with each other. First, the structure of the Spherical representation was adequately replicated in a Dutch sample (N = 656). Second, in so far as comparisons were possible, the relations between interests and personality were found to be congruent with previous findings. Third, Prestige interests, the defining feature of the Spherical representation, were related, albeit weakly, to Openness to Experience and to Extraversion. Last of all, Honesty–Humility and Openness to Experience were related to profile elevation in interest scores. All results were obtained for normative and ipsatized scales, revealing several meaningful differences in interests–personality relations depending on the type of interest scoring procedure.     

The structure of vocational interests in Germany: Different methodologies, different conclusions

The cross-cultural generalizability of vocational interest structures has received significant attention in recent years. This article adds to this research in four respects. First, data from a context that has not previously been investigated (Germany) was analyzed. Second, students at different stages of their educational career were examined. Third, the interest structure in male and females was compared. Fourth, two methods—the randomization test of hypothesized order relations (RTOR) and confirmatory factor analysis (CFA)—were applied to three competing structural conceptions: Holland’s circular representation, Gati’s hierarchical model, and Rounds and Tracey’s alternative hierarchical model. RTOR supported all three representations, whereas CFA supported only Holland’s model. CFAs indicated that the interest structure is reasonably invariant between high school and university students, but that the configurations for high school females and males differ. Substantive and methodological implications are discussed.     

Structure of vocational interests in Serbia: Evaluation of the spherical model

To explore the structure of vocational interests in Serbia, 1063 participants of various age, education and gender completed the Serbian version of the Personal Globe Inventory [PGI, Tracey, T. (2002). Personal Globe Inventory: Measurement of the spherical model of interests and competence beliefs. Journal of Vocational Behavior, 6, 113-172]. The fit of Tracey’s octagonal and spherical models to the structure of correlations between Tracey’s eight and 18 type scales was evaluated, as was the fit of Holland’s hexagonal, Gati’s, Rounds-Tracey’s and Liu-Rounds’ models to the structure of correlations between RIASEC scales. Randomization test of hypothetical orders, multidimensional scaling with fixed coordinates and Myors’ test were used to assess the fit of models to the data. The results showed good fit of Tracey’s octagonal and spherical models to the data. Holland’s hexagonal model also fit the data very well, but the fit of Gati’s, Rounds-Tracey’s and Liu-Rounds’ models of relations between RIASEC types was either nonsignificant or very low.     

The use of interest and competence scores to predict educational choices of Chinese high school students

This study examined how interest, perceived competence (i.e., efficacy), and prestige preference, as measured by the Personal Globe Inventory (PGI; Tracey, 2002), contributed to the classification of Chinese high school students with different education orientations. It was hypothesized that interest, efficacy, and prestige would yield a significantly higher correct classification hit rate of students with different educational orientations than would be expected by chance, and that the combined set of the interest, efficacy, and prestige predictors would contribute significantly more variance than interest scores alone or the efficacy scores alone in predicting students' educational orientations. Findings suggested that the interest and competence scores of the PGI based on both the Holland RIASEC model as well as the 4-type (People, Things, Data, and Ideas) model were able to discriminate among students in three educational orientation groups: Arts and Humanities, Business, and Science. The PGI interest and competence scores of students in these educational orientation groups were consistent with the expected theoretical direction. The findings were supportive of the concurrent validity of the PGI for senior high school students in Hong Kong. Theoretical and practice implications were discussed.     

Relation of occupational knowledge to career interests and competence perceptions in Italian children

The relations of differential occupational knowledge with interests and competence perceptions in children as well as how these relations were moderated by gender and grade were examined in this study using an Italian sample. Data were collected from samples of elementary school and middle school children (N = 539). The Inventory of Children's Activities—Revised (ICA-R; Tracey & Ward, 1998) was used to assess children's interest and competency perceptions in various activities associated with the Holland's RIASEC types. The Occupational Knowledge Scale (OKS) was created for this study, and consisted of a representative sampling of occupational titles to which children indicated their knowledge. Hierarchical regression results indicated a relationship between knowledge, interests, and competence perceptions in children. With regard to overall knowledge, no relationship was found between general knowledge and either grade or gender. More specific examination of the type of knowledge as it varied across the dimensions of People–Things, and Data–Ideas demonstrated that there appeared to be a specific pattern relating interest, gender, and grade to knowledge of occupations. For knowledge of people relative to things occupations, higher interest, higher grade level, and being female predicts stronger knowledge of people occupations. It was also found that interest in ideas predicts stronger knowledge of ideas occupations, and being male predicts stronger knowledge of high prestige occupations. Generally, competence perceptions did not have a unique relation with one's knowledge of People–Things, Ideas–Data, or Prestige; however, girls who reported higher competence had greater knowledge of ideas occupations.     

Relation of interest and self-efficacy occupational congruence and career choice certainty

A sample of 2145 adults completed the Personal Globe Inventory (PGI) as well as indicating their occupational choice and the certainty of this choice. The PGI yielded interest and self-efficacy scores and these were used with the occupational choice to calculate a congruence score for interests and one for efficacy. The prediction of career certainty by each congruence measure and their interaction was examined using hierarchical regression. The results indicated that while both interest and efficacy congruence were related to career certainty, efficacy congruence did not add to prediction above that obtained using interests congruence alone, however there was a substantial interaction. The agreement of interest congruence and efficacy congruence was related to a strong positive relation between congruence and certainty; whereas low agreement between interest and efficacy congruence was related to a non-significant relation between congruence and certainty. The results demonstrate the need to focus on both interest and efficacy and their agreement in our assessments and interventions.     

The structure of vocational interests in Filipino adolescents

The structure of vocational interests was investigated in Filipino high school students (N = 503), who rated their interest in 303 culture-relevant occupational titles and 93 major fields of study. Item-level principal components analyses identified general interest, prestige, and sex-type dimensions, rather than Prediger's (1982) People/Things and Data/Ideas dimensions. Additional factor analyses were conducted to derive scales that measure more specific interests, including Unskilled/Semiskilled Labor, Male-dominated, Engineering/Technology, Science, Medical, Arts, Commerce, Government/Law, and Education. The interest scales showed some resemblance or overlap with Holland's types, and gender differences on the scales conformed to expectations. However, the relationships among the scales and occupations were better accounted for by prestige and sex-type than by People/Things and Data/Ideas dimensions or by Holland's circular model. Developmental, cultural, educational, and economic factors that might account for Filipino students' focus on prestige and sex-type were discussed.     

Vocational interests across 20 years of adulthood: Stability,change, and the role of work experiences

Vocational interests demonstrate high rank-order stability during childhood and adolescence. However, few studies have investigated the development of vocational interests into adulthood. The present study examined rank-order and profile stability, mean-level and correlated change, and individual differences in change in RIASEC scores across 20 years of adulthood. In addition, life events were examined as moderators of change. Rank-order stability was strong across vocational interest dimensions. Mean-level changes also occurred, with increases in Realistic interests and decreases in Investigative interests for men, increases in Enterprising interests for women, and decreases in Artistic interests for men and women. Individual differences in change indicated that not everyone changed in the same manner, with occupational experiences, such as job loss, related to greater change.     

Correspondence of children's anticipated vocations, perceived competencies, and interests: Results from an Italian sample

Relations among anticipated vocations, self-assessments of competence, and interests in sample of 190 Italian children were examined. Children were asked what activities they liked, those they thought they were good at, and what job they expected when they grew up. The responses were coded into RIASEC Holland codes and agreement across the three questions was examined using kappa statistics. Results indicated that there was no relation between anticipated occupations and either interest or perceived competence. Thus, these anticipated occupations appear to be based on unrealistic criteria and the validity of studying such early expressions of interest is questionable. Conversely, results demonstrated a correspondence between interest and competence and this correspondence was similar for boys and girls and increased with age.     

Enhancing job satisfaction perspectives: Combining Holland themes and basic interests

Investigations addressing the match between vocational interests and satisfaction have emphasized higher-order dimensions (e.g., Holland themes) and specific occupational scales. Although support exists at these levels of analysis for the hypothesis that congruence between interests and work environments yields satisfaction, limitations of these perspectives frequently result in small effect sizes or inconclusive results. This study examined the capacity of content scales of the 2005 Strong Interest Inventory, including the General Occupational Themes (GOTs) and Basic Interest Scales (BISs), in predicting job satisfaction across 22 samples comprising 9647 working adults. Hypothesized multivariate sets of content scales, and predicted individual GOTs and BISs demonstrated significant group differences. Sequential discriminant function analyses demonstrated that sets of hypothesized BISs significantly distinguished between satisfied and dissatisfied workers beyond the six Holland themes in 17 of the 22 occupational samples. The authors discuss practical implications of interpreting BISs to augment Holland themes related to job satisfaction.     

Vocational interest structures for Asian Americans,Middle-Eastern Americans and Native Americans on the 2005 Strong Interest Inventory

This study examined whether the vocational interests of Asian Americans, Middle-Eastern Americans, and Native Americans, as measured by the 2005 Strong Interest Inventory (SII), followed Holland's (1997) calculus hypotheses for a RIASEC ordering. The structures of interests of these three racial/ethnic groups were examined for fit with two structural models: (1) a less-stringent model requiring a circular RIASEC ordering and (2) a more stringent model requiring equal distances between adjacent interest types. Individuals who completed the 2005 Strong Interest Inventory were included in the sample (N = 22,394), and the overall sample was divided between racial/ethnic groups, gender, and professional status (i.e. student and employed adults). Results from randomization tests of hypothesized order and circular unidimensional scaling analyses found that a circular RIASEC order is applicable to Asian American, Middle-Eastern American and Native American students and employed adults, regardless of gender, when measured by the 2005 Strong Interest Inventory. Results from this study indicate that the current version of the Strong Interest Inventory measures vocational interests in a manner that strongly aligns with Holland's calculus hypothesis for both men and women.     

The resurrection of vocational interests in human resources research and practice: Evidence,challenges, and a working model

A large number of studies conducted over the past two decades reconsidered and supported the validity of vocational interests for predicting a range of important work outcomes. Yet to date, interests remain relatively underused in professional settings, in part because discussions of why, how, and where to use interest assessment tools in an evidence-based manner are lacking and often incomplete. In this article, we briefly review and summarize the available evidence to then further discuss ways in which interest assessment can support various stages of the human resources (HR) cycle, including recruiting, selecting, retaining, and developing employees. From this overview, a number of challenges and apparent paradoxes are derived when working with interests, which may hinder the effective application of these assessments. Therefore, we propose a new working model that treats interest assessments both as “select-out” and “select-in” tools, to identify personal attributes that can either be “must-haves” for an organization in the short term, but at the same time can represent “unique potential” for that organization in the long term. Throughout the text, we also discuss where additional research is needed to further substantiate the use of interests in the HR cycle.     

Success in the first phase of the vocational career: The role of cognitive and scholastic abilities,personality factors,and vocational interests

The present study examines the relationship of cognitive and scholastic abilities, vocational interests, and personality traits with vocational success in the first phase of the vocational career. Drawing on large samples of technicians and industrial clerks, the effects of the covariates on satisfaction and dropout intention in the first months of vocational education and training (VET) were examined. Results show that the sets of predictor variables, especially personality traits and vocational interests, had a large proportion of variance in common, but exhibited different patterns of effects. Whereas in the case of personality traits the predictor-outcome relationships were largely invariant across different fields of VET, vocational interests exhibited a non-invariant pattern of effects that was in line with the congruence hypothesis (Holland, 1997). Vocational interests in the dominant domain characterizing the field of VET were the strongest predictors, whereas interests in the non-dominant VET domains were less important for predicting success. Abilities did not turn out to be important predictors of the markers of success under study. The results underscore the crucial role of personality traits and vocational interests in securing success in the first phase of vocational career.     

Birth cohort change in the vocational interests of female and male college students

The purpose of this research was to investigate the extent to which vocational interests have changed across birth cohorts of college students to better understand how socio-cultural factors may have an impact on career development. Using meta-analytic data collection methods, dissertations and journal articles presenting interests scores representing Holland's RIASEC typology from the Strong Interest Inventory and Strong Campbell interest inventory were gathered. With samples spanning a time period from 1976 to 2004, relations between cohort year and interests were examined with weighted regressions. A salient aspect of our results was an increase in the Enterprising interests of females and decrease in the Realistic and Investigative interests of males. This finding, along with a reduction in differences between female and male Investigative, Enterprising, and Conventional interests from earlier to more recent cohorts parallels movement of American culture toward egalitarian views of gender and provides evidence for the effect of sociocultural factors on interests.     

Gender bias and construct validity in vocational interest measurement: Differential item functioning in the Strong Interest Inventory

Item response theory was used to address gender bias in interest measurement. Differential item functioning (DIF) technique, SIBTEST and DIMTEST for dimensionality, were applied to the items of the six General Occupational Theme (GOT) and 25 Basic Interest (BI) scales in the Strong Interest Inventory. A sample of 1860 women and 1105 men was used. The scales were not unidimensional and contain both primary and minor dimensions. Gender-related DIF was detected in two-thirds of the items. Item type (i.e., occupations, activities, school subjects, types of people) did not differ in DIF. A sex-type dimension was found to influence the responses of men and women differently. When the biased items were removed from the GOT scales, gender differences favoring men were reduced in the R and I scales but gender differences favoring women remained in the A and S scales. Implications for the development, validation and use of interest measures are discussed.     

The other side of the coin: Vocational interests,interest differentiation and annual income at the occupation level of analysis

This research examined the effects of vocational interest levels and differentiation on annual income. Following the environmental perspective, we investigated whether relationships existed at the occupation level of analysis. Using data from 665 occupations in the U.S. obtained from U.S. Bureau of Labor Statistics and O*Net, we demonstrated that certain vocational interests – namely investigative, enterprising, and realistic interests – were most critical in predicting annual income for occupations. Controlling for interest levels, differentiation not only positively predicted annual income but also moderated each interest's relationship with income. In addition, occupations' education and training requirement partially mediated the effects of interest profiles on income. Our findings reveal the need for a better understanding of how characteristics of an occupation's interest profile may shape the experiences of its workers.     

Integrating work and basic values into the Spherical Model of Interests

Two prominent models of values, one in work and the other in life, were examined as they each related to the dimensions underlying the Spherical Model of Interests (Tracey & Rounds, 1996) as measured by the Personal Globe Inventory (PGI; Tracey, 2002). The technique of external property vector fitting was utilized to plot the value constructs onto two- and three-dimensional interest structures in a sample of 206 college students. Results, when compared across both theoretical and empirical definitions of interest space, indicated that all work values and fewer basic values related to two dimensions, but that only the work value of Achievement and the life value of Power related to the Prestige dimension. Implications for research and for assessment that involves integrating the results of values and interest inventories are discussed.