Re-conceptualizing the past: Historical data in vocational interest research

Noteworthy progress has been made in the development of statistical models for evaluating the structure of vocational interests over the past three decades. It is proposed that historically significant interest datasets, when combined with modern structural methods of data analysis, provide an opportunity to re-examine the underlying assumptions of J.L. Holland’s [Holland, J. L. (1959). A theory of vocational choice. Journal of Counseling Psychology, 6, 35–45; Holland, J. L. (1997). Making vocational choices (3rd ed.). Odessa, FL: Psychological Assessment Resources] RIASEC model. To illustrate this potential, data obtained from J. P. Guilford’s study of interest structure were re-analyzed using modern circumplex and hierarchical clustering techniques to evaluate Holland’s and I. Gati’s [Gati, I. (1979). A hierarchical model for the structure of interests. Journal of Vocational Behavior, 15, 90–106; Gati, I. (1991). The structure of vocational interests. Psychological Bulletin, 109, 309–324] interest structures. Obtained results indicate that a circumplex model can be used to effectively represent the structure underlying Guilford’s interest measures. However, hierarchical clustering results suggest that Holland’s RIASEC types may not be the most effective categories for grouping specific interest measures into broader interest areas. The current findings provide support for the continued investigation of alternatives to Holland’s interest categories using modern measures of basic interests.     

Examination of the structure of Irish students’ vocational interests and competence perceptions

A sample of 307 Irish high school students completed a modified version of the Personal Globe Inventory (PGI, Tracey, 2002). Results of separate principal components analyses demonstrated the presence of three substantive factors: People/Things, Data/Ideas, and Prestige, similar to the structure of the PGI in US samples (Tracey, 2002). The fit of Holland’s six-type RIASEC, the PGI eight-type model, and the PGI spherical structure to the data were examined using the randomized test of hypothesized order relations. The results demonstrated that each model fit the Irish data well. No structural differences were found between gender groups. The results support the structural validity of the modified PGI in an Irish context.     

Sex and cultural differences in the factorial structure of the self-directed search

Holland's Self-Directed Search was administered to 247 male and 252 female high school students, aged 16 to 18 years, attending state schools in New Zealand. Principal factor analysis was used in an attempt to identify six orthogonal factors analogous to Holland's six personality types. The Social and Enterprising scales could not be split into two factors in either sample, and the Investigative and Realistic scales defined a single factor for the female students. Computed distances between pairs of the six personality types in five dimensional factorial space were compared with the relative ordering of the distances expected from Holland's hexagonal model. The positions of the types in space corresponded more closely with the model for the males than they did for the females. The results, in conjunction with those of similar studies in Israel and the United States, imply that the correspondence between some summary codes on the SDS and existing occupational classifications based on Holland's types may be less than perfect, particularly for females. Also, care should be taken when using codes on the SDS to calculate Holland's indices of “consistency,” especially for females.     

Structural examination of RIASEC scales in high school students: Variation across ethnicity and method

The structural validity of Holland’s model of vocational interests across racial/ethnic groups was examined in the population of high school juniors in two states. The fit of the circumplex model to Holland’s RIASEC types as assessed by the UNIACT-R was evaluated for the general sample and five subgroups: Caucasian/Euro-Americans, African Americans, Asian Americans, Latinos, and Native Americans. Four different methods were used to test the proposed circumplex structure, each with various circumplex definitions. Results indicate that nonparametric methods generally showed good model-data fit, whereas SEM-based results indicated less support. No differences in fit were found across ethnicity supporting the usage with U.S. ethnic groups.     

The fit of Holland’s RIASEC model to US occupations

Holland’s [Holland, J. L. (1959). A theory of occupational choice. Journal of Counseling Psychology, 6, 35-45; Holland, J. L. (1997). Making vocational choices: A theory of vocational personalities and work environments (3rd ed.). Odessa, FL: Psychological Assessment Resources, Inc.] RIASEC types were initially developed using a restricted range of occupational titles. Holland’s type classification system has been extended to encompass the full range of occupations in the US, using both statistical and expert rating methods. However, the extent that Holland’s classification model is sufficient to represent the full range of occupational interests has not been examined. Multidimensional scaling (MDS) was used to analyze college students’ (266 men, 572 women) interests in occupations representing approximately 85% of the US labor market. A two-dimensional MDS solution of the full set of occupations did not fit Holland’s model, but limiting the analysis to occupations used in Holland-based measures produced the expected RIASEC structure. In comparison, a three-dimensional solution included Prediger’s [Prediger, D. J. (1982). Dimensions underlying Holland’s hexagon: Missing link between interests and occupations? Journal of Vocational Behavior, 21, 259-287] dimensions (Things/People and Data/Ideas) consistent with Holland’s model, but also included prestige and sex-type dimensions that were not orthogonal to Prediger’s dimensions. These results demonstrate that the RIASEC types are not sufficient to represent the full range of occupational interests and are confounded with prestige and sex-type.     

Exploring the effects of congruence and Holland’s personality codes on job satisfaction: An application of hierarchical linear modeling techniques

This study applied hierarchical linear modeling to investigate the effect of congruence on intrinsic and extrinsic aspects of job satisfaction. Particular focus was given to differences in job satisfaction by gender and by Holland’s first-letter codes. The study sample included nationally represented 1462 female and 1280 male college graduates who held full-time jobs in 2000. Congruence was measured by using actual occupational and academic major codes. After controlling for the differences across three-letter Holland personality codes, results indicate that job satisfaction was largely a function of individual attributes rather than disparities in personality types. Holland’s congruence was most effective in explaining intrinsic dimensions of job satisfaction for females, and less effective for extrinsic job satisfaction for both genders. Social females and males were less satisfied with extrinsic satisfaction, while Conventional and Social females were more satisfied with intrinsic features in their vocational environments.     

The relationship of participation in school activities to abilities and interests in a high school student sample

Participation in school activities is hypothesized to be related to the multiple abilities and interests of high school students. The Ball Aptitude Battery (yielding 14 ability scores), Holland's Vocational Preference Inventory, and a biographical information blank (to obtain information about participation in 53 extracurricular activities) were administered to over 900 high school seniors of both sexes. Correlational and multiple regression analyses showed different patterns of activity participation to be related to different abilities and interests. The degree of relationship was generally low, generally higher for the males than for the females, and higher for interests than for abilities. Activity correlates of abilities differed for the sexes, but activity correlates of interests tended to be similar. This suggests that the same ability can result from differential participation in activities, but the same interest develops from similar activities.     

The role of personality in the selection of a major: With and without vocational self-efficacy and interests

The purpose of this study is to examine the role of personality traits measured by the Multidimensional Personality Questionnaire (MPQ; [Tellegen, 2000] and [Tellegen and Waller, 2008]) in selecting educational majors. Personality traits were examined alone, and with the combination of Holland’s hexagonal confidence domains, as measured by the general confidence themes (GCT) of the Skills Confidence Inventory (SCI; Betz, Borgen, & Harmon, 2005), and Holland’s interest domains, as measured by the general occupational themes (GOTs) of the 2005 Strong Interest Inventory (SII; Donnay, Morris, Schaubhut, & Thompson, 2005). Personality traits significantly contributed to the discrimination of nine educational major families in a sample of 368 undergraduate decided students. When the set of confidence and interest scales was added to the personality traits, the conservative jack knife hit rate was almost doubled.     

Development and initial validation of brief public domain RIASEC marker scales

Although commercially developed interest measures based on Holland’s RIASEC types are effectively used in a variety of applied settings, these measures have somewhat limited research utility due to their length and copyright restrictions placed by the test publishers. In the present study, two sets of 8-item RIASEC scales were developed using activity-based items selected from the 30-item RIASEC scales of the Interest Profiler, and two sets of 8-item RIASEC scales were developed using sets of 30 occupational job titles selected from the O∗NET database representing each Holland type. Responses to the items were obtained from three samples of college students with a total of 1024 female and 639 male participants. Results obtained in the initial development and validation process suggest that the sets of brief activity- and occupational-based RIASEC scales developed in the current study retain acceptable levels of reliability and convergent validity. The development of these brief public domain RIASEC interest measures addresses the copyright and length limitations of current scales and may be useful when conducting integrative research examining the inter-relations between Holland’s types and other individual differences measures.     

Testing social cognitive interest and choice hypotheses across Holland types in Italian high school students

Several hypotheses emanating from social cognitive career theory (SCCT) were tested. Participants (796 Italian high school students) completed measures of self-efficacy, outcome expectations, interests, social supports and barriers, and choice consideration related to occupations representing Holland’s (1997) six RIASEC types. Findings indicated general support, across Holland types, for the hypotheses that self-efficacy and outcome expectations jointly predict interests, and that interests mediate the relations of self-efficacy and outcome expectations to choice consideration. However, the specific nature of the mediation effect (i.e., full versus partial) varied somewhat across the RIASEC types. In addition, contrary to SCCT’s predictions, social supports and barriers related to choice consideration mostly indirectly (through self-efficacy) rather than directly. We consider the implications of these findings for further research on SCCT’s choice and environmental hypotheses.     

An application of Strong's validity criteria to basic interest scales

E. K. Strong, Jr.'s (Vocational interests of men and women, Stanford, Calif.: Stanford Univ. Press, 1943) four propositions for interest-inventory validity andJ. L. Holland's (Making vocational choices: A theory of careers, Englewood Cliffs, N.J.: Prentice-Hall, 1973) hexagonal classification system were synthesized in order to adapt a traditional procedure for determining the construct validity of occupational interest scales to the validation of basic interest scales. The procedure was tested using a sample of 4035 males and 3671 females whose interest inventory results as high school students and whose majors as college seniors could be assigned Holland codes. Results of the study indicate that this procedure can be used to assess the construct validity of inventories using basic interest scales.     

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.     

Precursors of learning experiences in Social Cognitive Career Theory

This study extended the research on Social Cognitive Career Theory (SCCT; [Lent, R. W., Brown, S. D., & Hackett, G. (1994). Toward a unifying social cognitive theory of career and academic interest, choice, and performance. Journal of Vocational Behavior, 45, 79-122]) by examining the contributions of 3 person inputs (personality, gender, and conformity to gender role norms) to career-related learning experiences for each of Holland’s [Holland, J. L. (1997). Making vocational choices: A theory of vocational personalities and work environments (3rd ed.). Odessa, FL: Psychological Assessment Resources] 6 RIASEC themes. Participants (144 female and 113 male college students) completed measures of personality, conformity to feminine and masculine role norms, and learning experiences for Holland’s RIASEC themes. Results of path analyses indicated that the combination of person inputs explained a significant proportion of variance in each of the RIASEC-based learning experiences. Results supported 9 of 13 hypothesized relations involving personality, and suggested that for some personality traits, the relation to RIASEC-based learning experiences is both direct and indirect, via conformity to gender role norms. Results also revealed that gender predicted learning experiences for 5 of the 6 Holland themes; however, 4 of those relations were partially or completely mediated by conformity to gender role norms. Finally, findings supported 5 of 12 hypothesized relations involving conformity to gender role norms, and suggested that gender role conformity may be most relevant to learning experiences in the Realistic and Social domains.     

Multidimensional structure and measurement invariance of school engagement

This study examined the multidimensional structure and measurement invariance of a school engagement instrument using confirmatory factor analysis (CFA), exploratory structural equation modeling (ESEM), bifactor CFA (BCFA), and bifactor ESEM (BESEM). Participants consisted of 1731 students in Grades 9 - 11 from the 4-H Study of Positive Youth Development in the United States. The use of the CFA, ESEM, BCFA, and BESEM models was expected to provide more insight into the cross-loading and hierarchical structures of school engagement. We found empirical evidence to support the (a) tripartite factor structure of school engagement, (b) existence of cross-loadings and hierarchical structures, (c) measurement invariance across gender (male vs female) and race (European American vs African American), and (d) expected latent means differences by gender.     

Structure of RIASEC scores in China: A structural meta-analysis

A structural meta-analysis was conducted to evaluate the fit of four different representations of the relations among RIASEC types, [13] and [14] circular order model, Gati’s (1991) three-group partition model, Rounds and Tracey’s (1996) alternative three-group partition model, and Liu and Rounds’ (2003) modified octant model, on 29 RIASEC correlation matrices collected from Chinese participants. The randomization test of hypothesized order relations was used to evaluate model fit. The results indicated that Holland’s model had the worst fit and was lower than it is fit in US samples; while Gati’s and Rounds and Tracey’s models had best fit. The fit of the Liu and Rounds’ model lay between the fit of Holland’s model and the other models. There was minimal difference in this ordering of model fit across instrument, age, gender and region. These results are interpreted with respect to differences in Chinese culture relative to the US.     

当代大学生职业兴趣结构特征研究

通过实际调查对当代大学生的职业兴趣结构特征进行了分析研究。用主成分分析方法以及多维尺度方法探索出当代在学生的职业兴趣有三个潜在维度,可以分为18类。利用RANDALL和18RQNd96程序检验职业兴趣结构,构建了职业兴趣的球形模型。     

Academic achievement: An examination of Holland's congruency,consistency, and differentiation predictions

This investigation tested three predictions derived from Holland's (1973) theory of vocational development regarding academic achievement. Groups of 392 male and 424 female entering college freshmen were typed using the Strong-Campbell Interest Inventory and were categorized in terms of congruency, consistency, and differentiation. Freshmen with congruent college major choices or with definite majors but indefinite Holland orientations enjoyed greater academic success than students who specified incongruent choices or no definite major choice. Students with personality codes of high or low consistency outperformed students with moderately consistent codes. Freshmen males with differentiated personal orientations achieved higher grade point averages than males having nondifferentiated personality profiles. For females, differentiation was not significant. In all sex comparisons female trends paralleled male trends and females generally outperformed males. Implications for vocational development and counseling were discussed in the context of Holland's theory.     

Self-efficacy and interest: Experimental studies of optimal incompetence

How does self-efficacy affect interest? The interest-and-interests model assumes that factors that induce interest—novelty, complexity, conflict, and uncertainty—do so non-linearly. Self-efficacy should thus affect interest quadratically, because it reflects uncertainty about an activity’s outcome. When self-efficacy is low, interest is low because the activity’s outcome is certain. When self-efficacy is moderate, the person’s success on the task seems likely, but not inevitable. But as self-efficacy becomes very high, success seems completely certain, and the task is thus uninteresting. Two experiments tested these predictions. Experiment 1 asked people to rate the interestingness of differentially difficult activities; Experiment 2 manipulated self-efficacy regarding a fuzzy dart game. In both experiments, interest was a quadratic function of self-efficacy. Implications for theories of vocational interest development and change are considered.     

Prevention of school bullying: The important role of autonomy‐supportive teaching and internalization of pro‐social values

Background. This study examined students’ perceptions of autonomy‐supportive teaching (AST) and its relations to internalization of pro‐social values and bullying in class. Aims. We hypothesized that: (1) teachers’ AST, which involves provision of rationale and taking the student's perspective, would relate positively to students’ identified internalization of considerateness towards classmates, and would relate negatively to external regulation (considerateness to obtain rewards or avoid punishments); (2) students’ identified regulation would relate negatively to self‐reported bullying in class, whereas external regulation would relate positively to bullying; and (3) the relation between teachers’ AST and student bullying would be mediated by students’ identification with the value of considerateness towards others. Sample. The sample consisted of 725 junior high school students (50% females) in Grades 7 and 8 from 27 classes in four schools serving students from lower‐middle to middle‐class socioeconomic backgrounds. Method. The participants completed questionnaires assessing the variables of interest. Results. Correlational analysis supported the hypotheses. Moreover, mediational analyses using hierarchical linear modelling (HLM) demonstrated that identified regulation mediates the negative relation between AST and self‐reported bullying in class. The mediational hypothesis was supported at the between‐class level and at the within‐class level. Conclusions. The findings suggest that school policy aimed at bullying reduction should go beyond external control that involves external rewards and sanctions and should help teachers acquire autonomy‐supportive practices focusing on students’ meaningful internalization.