Relationships between SVIB nonoccupational scales and achievement for six Holland personality types

The subjects were 432 male freshmen at the University of North Dakota who completed the Vocational Preference Inventory and the Strong Vocational Interest Blank. Backward stepwise multiple regression was used to determine the relationships of eight SVIB nonoccupational scales to first semester GPA for the total research population and for each Holland personality type. Personality types were determined by using the highest T score among the first six VPI scales. Significant multiple correlations between the SVIB nonoccupational scales and GPA were found for the total research population and for five of the six personality types. For the Enterprising type, the eight SVIB scales failed to predict GPA significantly. The results were discussed in terms of the differential patterns of multiple correlations for the total research population and for the personality types.     

Empirical derivation of SVIB-Holland scales and conversion tables

Significant relationships between the Holland Vocational Preference Inventory (VPI) and the Strong Vocational Interest Blank (SVIB) were again empirically demonstrated in this study, and conversion equations were developed to use standard scores of SVIB scales, rather than items, to produce estimates of VPI scores. Cross validation on a limited population yielded supportive evidence that these conversion equations can provide meaningful VPI estimates from SVIB scale scores. The need for validation across a variety of populations was underscored in order to assess further generalizability of these findings.     

Empirical derivation of SVIB-Holland scales: A brief report

The Strong Vocational Interest Blank responses of 93 students were used to construct six empirical scales similar to the scales of Holland's Vocational Preference Inventory. Scores on the empirical scales were correlated with actual VPI scores. The resulting correlations were compared to coefficients obtained from correlating the intuitive scales designed by Campbell with actual VPI scores. It was concluded that (1) meaningful estimates of VPI profiles can be obtained by scoring selected items from the SVIB and (2) further work with the empirical scales is needed prior to settling on a SVIB scoring procedure for estimating VPI profiles.     

The inheritance of cognitive interest styles among twins

Through twin studies, research in behavioral genetics has demonstrated significant genetic components in many personality traits. Less research has been done on inheritance of vocational interest preferences, partially because of the lack of a wholistic conceptual model for understanding the relationships among diverse occupational interests. With the development of scales for the Strong Vocational Interest Blank (SVIB) to measure the six cognitive interest styles propounded by Holland, a parsimonious and comprehensive mapping of the occupational world was available and lent itself to the study of measuring inheritance of vocational preferences among twins. Median intraclass correlations for 409 pairs of monozygotic males, tested with the SVIB, was r = .50; for 570 pairs of monozygotic females, r = .55; for 237 pairs of dizygotic males, r = .27; and for 370 pairs of dizygotic females, r= .27.     

Concurrent validity of Holland's theory for college degreed working women

The study was designed to explore two areas: (1) the concurrent validity of Holland's theory for employed college degreed women using two different operational definitions (Vocational Preference Inventory and the Self-Directed Search) of vocational orientation; and (2) the relationships among same named scales across the VPI and the SDS. Concurrent validity was studied by administering the VPI and the SDS to 179 women workers in occupational environments consistent with Holland's six vocational environments. In general, the findings indicate that the VPI and SDS scales tend to effectively discriminate among the occupational groups consistent with Holland's theoretical framework. In addition, the correlation coefficients for same named scales for the two inventories were all found to be significant. In sum, the results of the study lend some support to the concurrent validity of Holland's theory for employed college degreed women.     

A configural approach to the use of the strong vocational interest blank with student engineers

SVIB profiles of 1169 freshmen entering a college of engineering were grouped according to total occupational scale profile similarity into 28 code types. Mean scores or percentages for the individuals in each code type were compared to base rate values for income variables including ability, personality, and socioeconomic data and outcome variables including academic progress, choice of major, counsel-seeking behavior, and place of residence. The data for four code types were presented together with examples of how the results might be used by a counselor. The investigators concluded that SVIB profile types can be useful in acting as moderator variables to predict student characteristics, and that total profile analysis of the SVIB occupational scale merits further attention.     

Personality types and traits in the Vocational Preference Inventory

The relationships between the six scales on which Holland's (1973) theory is based (viz., Realistic, Investigative, Social, Conventional, Enterprising, Artistic) and the five other scales (viz., Self-control, Masculinity, Status, Infrequency, Acquiescence) of the Vocational Preference Inventory (VPI) (Holland, 1970) were investigated using canonical analysis. Considering the six personality type scales as one set of variables and the five trait scales of the VPI as the second set of variables, five significant canonical correlations were obtained for a sample of 373 mostly white undergraduate students. In a second study, three significant canonical correlations were found for a sample of 115 black college students at another school. The weights of the VPI scales suggested that three patterns of relationships among the scales are shared by the black sample and the mostly white sample.     

Extending Holland's theory to adult women

The potential of Holland's theory for use in the vocational guidance of adult women depends in part on more validity data with regard to the conceptual meaningfulness of the constructs. This study reports the findings of a correlative analysis between scores on Holland's Vocational Preference Inventory (VPI), which measures the six “styles”, and selected scales on four criterion tests predicted in advance to be related to the VPI. The findings for this sample of adult women indicate strong evidence for the validity of the Intellectual, Conventional and Enterprising “styles”, but questions are raised with regard to the meaningfulness of the Realistic, Social, and Artistic types.     

The factor structure of the Vocational Preference Inventory for black and white college students

This study investigated whether the variables measured by the Vocational Preference Inventory (VPI) were the same for both black and white students. Kaiser et al. (1969) have noted that the same measurements used with different populations may not measure the same variables and have presented a method of determining the degree of correspondence in the two populations. In the present study, the VPI scores for a group of black students and a group of white students were factor analyzed separately and the black structure was rotated to correspond to the white structure. The correspondence between the variables measured by the VPI for black and white students was found to be very similar. This is to say that the VPI measures the same variables for both black and white college students.     

A research note on the new SVIB Holland scales

The Strong Vocational Interest Blanks (SVIB) of 93 management students were scored using six new scales which correspond to Holland's six occupational types. The scores from both the 14-item and the 20-item scales were correlated with actual scores on the Vocational Preference Inventory. The 14-item and the 20-item scales were also correlated with each other. In addition, the SVIB-derived Holland scales were scored using a simplified procedure, and the results were compared with the scoring procedure used by Campbell.     

Interests of career and homemaking oriented women

The women's form of the SVIB and a Career Orientation questionnaire were administered to a sample of 90 undergraduate women. The sample was divided into two groups, career and homemaking oriented, on the basis of high-low career orientation scores. The two groups obtained significantly different scores on 25 of the 57 occupational scales on the women's SVIB. Career orientation correlated significantly with the academic achievement interest and homemaking basic interest scales of the SVIB but not with the femininity-masculinity scale. Results are discussed in terms of the interest patterns of career and homemaking-oriented students.     

Expressed and inventoried vocational interests as predictors of college graduation and vocational choice

This is a follow-up study of 195 agricultural students originally tested when they entered college in 1970. Students whose Strong Vocational Interest Blank (SVIB) patterns were consistent with their stated choice of major were the congruent sample. Students whose SVIB patterns were inconsistent with their stated choices of major were the discrepant sample. A follow-up was made on graduation rates, eventual major, and job placement. Discrepant subjects changed major more often but graduated at the same rate as congruents. The SVIB did not seem to add anything to the student's expressed interests in predicting college continuation. There was a trend for congruent graduates to more frequently take jobs which matched their majors.     

Strong Vocational Interest Blank basic interest clusters and occupational satisfaction

A Q-factor analytic technique applied to the Strong Vocational Interest Blank (SVIB) basic interest scales of 156 males yielded three bipolar factors described as conceptual (applied vs theoretical thinking); interpersonal (people vs things); and volitional (autonomy vs structure). From these results the investigators constructed a model for categorizing occupations into corresponding vocational areas: managerial vs academic, social vs physical sciences, and professional vs technical. Each individual's primary interest area and occupational status relative to the six corresponding areas was then determined. The degree of fit between interests and job categorization related significantly to ratings of job satisfaction (p < .001). Those findings are complementary to Holland's notion that interests are expressions of psychological needs and to Lofquist and Dawis' perception of interests and jobs as needs and need reinforcers.     

Holland's theory and non-college-degreed working men and women

The main concern of this study was to investigate differences between men and women employed in traditional male occupations using the Vocational Preference Inventory (VPI) and the Self-Directed Search (SDS). The VPI and the SDS were administered to 103 male and female non-college-degreed workers in three occupations (bus-taxi drivers, police officers, and car sales agents) corresponding to three of Holland's environmental categories (Realistic, Social, and Enterprising). In general, the results indicate that the VPI and SDS scales to some extent discriminate among occupational groups, but expected patterns do not always occur within and between occupational groups.     

Exploring new directions for Strong-Campbell Interest Inventory Occupational Scale construction

Recent concern for eliminating Strong Vocational Interest Blank (SVIB) sex bias has focused on the current use of separately normed Occupational Scales for the two sexes. This study implemented six basic methods of scale construction to examine the feasibility of combined-sex scales as well as advantages or disadvantages of modifications of current techniques designed to improve both single-sex and combined-sex scale construction. To study these six methods of scale construction, samples of male and female Ph.D. sociologists were collected. Concurrent validity and test-retest reliability data indicated that combined-sex scale construction for sociologists is possible if differences in female and male occupational interests, as measured by the SVIB, are treated as irrelevant variables in the world of work, and if concurrent validity is sacrificed.     

The use of conditional probabilities in applications of Holland's theory

The hexagon of J. L. Holland (1973, Making Vocational Choices: A Theory of Careers, Englewood Cliffs, NJ, Prentice-Hall) is a useful heuristic device for predicting congruency and consistency among the six personality/environment types specified by his theory. One limitation of the traditional hexagon is the implicit bidirectionality: the hexagon displays a single distance between two types. People in applied areas may assume a symmetry which does not exist. Examples are given of situations in which a consistent asymmetry occurs; e.g., in the illustrative data presented, C (Conventional) types are more likely to have E (Enterprising) as a secondary interest than E types are to have C as a secondary interest. Implications of such asymmetries are discussed and suggestions made concerning counseling and other applications.     

A Comparison of the SVIB Basic Interest Scales with the Regular Occupational Scales

The purpose of this study was to determine whether the recently developed Basic Scales for the SVIB would provide more generalizable and psychologically meaningful information than the regular SVIB Occupational Scales. Four groups of students were used, two entering contrasting four-year curricula (Science, N-282, vs Non-Science, N = 142) and two entering contrasting two-year curricula (Art, N = 45 vs Technical, N = 62). Basic and regular SVIB scale means were calculated for each group. Those scales with large (approximately one-half a standard deviation or more) and statistically significant differences were identified for both the four-year and the two-year group comparisons.     

Concurrent validity of Holland's theory for non-college-degreed black women

This study, using the Vocational Preference Inventory (VPI) and the Self-Directed Search (SDS), explored the concurrent validity of Holland's theory for employed non-college-degreed black women. The VPI and the SDS were administered to 102 black women workers in occupational environments consistent with Holland's six vocational environments. The results revealed that four scales of the VPI and four scales of the SDS successfully differentiated the occupational groups consistent with Holland's theoretical notions. In general, the findings lend some support to the concurrent validity of Holland's theory for employed non-college-degreed black women.     

Concurrent validity of Holland's theory for college-degreed black women

This study, using the Vocational Preference Inventory (VPI) and the Self Directed Search (SDS), explored the concurrent validity of Holland's theory for employed college-degreed black women. The VPI and SDS were administered to 93 black women workers in occupational environments consistent with Holland's six vocational environments. The results revealed that four scales of the VPI and five scales of the SDS successfully differentiated the occupational groups consistent with Holland's theoretical notions. In general, the findings lend some support to the concurrent validity of Holland's theory for employed college-degreed black women.     

Occupational classification in terms of interest patterns

This study was designed to identify the important clusters of occupational groups identifiable from an analysis of the dimensions accounting for similarity in profile shapes among a set of 28 new vocational interest measures. A total of over 47,000 individuals belonging to 189 particular occupational groups have completed the Strong Vocational Interest Blank and had their data summarized in the form of group profiles. The matrix of 189 occupational group profiles of the 22 SVIB Basic Scales was analyzed by a series of multivariate procedures designed to predict group profiles on the Jackson Vocational Interest Survey (JVIS). Predicted JVIS profiles were obtained using an intercorrelation matrix of 548 males who had completed both the SVIB and the JVIS. Predicted JVIS profiles were subjected to a form of transpose factor analysis to obtain clusters of similar occupations. A total of 23 distinct occupational clusters were obtained, ranging from military officers to salesmen, and were interpreted as representing the major groupings of occupations defined by similar patterns of vocational interest.