RESEARCH and DEVELOPMENT
TECHNICAL SUMMARY for Career Direct®
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I. TECHNICAL INFORMATION ON THE
Career Direct® PERSONALITY SECTION
The Personality Section of the Career Direct®
Report is a personality inventory appropriate for
vocational counseling consisting of six general
scales with multiple subscales. Additional scales
cover Life Stress, Indebtedness, and Financial Management.
(1) Development
Development of the Personality Section began with
the identification of items for every dimension
of personality that could be imagined and then by
administering an inventory of those items through
several iterations to large samples. The resulting
factor analysis consistently revealed the presence
of six major personality dimensions. The six factors
are Dominance, Extroversion, Compassion, Conscientiousness,
Adventurousness, and Innovation. Names for the overall
dimensions were based on the general thrust of the
items in the dimensions. Next, adjectives were chosen
to describe both ends of the dimension. Dimensions
comprise a continuum of behaviors. For instance,
compliant - mid-range - dominant, or introverted
- mid-range - extroverted. Individual scores are
shown at points on this continuum, based on their
scores compared to the norm or the standard of the
population that was measured.
(2) Design Process
1. Both a rational approach and a principal component
factor analytic approach were used to develop the
inventory.
2. Psychologist consultants began by defining all
known traits used to describe personality.
3. Once all trait dimensions had been defined,
items were written in different formats to rationally
measure those dimensions.
4. The single word adjective format was chosen
over alternative formats; test individuals preferred
the single words and researchers found the resulting
factors to be clearer to interpret.
5. Factors of personality dimensions were developed
from the sample subjects’ responses using
many statistical analyses. These included principal
components factor analyses, with rotated varimax
factors. These analyses grouped the words by the
major factors that resulted.
6. Both item level and dimension level analyses
were used to select the best words to measure the
dimensions (factors). Words that were not highly
correlated to the factors or which were duplicates
or redundant were dropped.
7. Subfactors for each factor were also developed
from this process, yielding a total of sixteen subfactors
within the six personality factors.
(3) Samples
1. Six different samples of adults and youth (N=4,105)
were used in revising and defining the Personality
Section.
2. The final sample of adults (N = 1,048) was selected
on the basis of self-satisfaction and relative success
in an occupational field in which the person had
been for at least three years.
3. The final youth sample (N = 572) were a group
who were 23 years of age or younger who were primarily
college freshmen from 26 college and universities
representing all regions of the country.
(4) Format
1. Personality / Life Stress items consist of
116 adjectives which are self-rated on a scale:
“Not at all like me” to “Very
much like me.”
2. The Money/ financial scales consist of 14 statements
self-rated as the adjectives.
(5) Scoring
1. Raw scores for each factor (six personality,
one life/stress, and two financial) and subfactor
(sixteen, two or three for each factor) are the
sum of the numerical responses marked for each word
of the factor (a five-word factor with all “5's”,
“very much like me” responses has a
raw score of twenty-five; all “1's”,
“not at all like me” responses results
in a raw score of five).
2. Standardized “T”scores were derived
from the raw scores of the standardization sample
for adults and youth (see final sample described
above in “Samples”). The conversion
formula for “T” standard scores is:
T score = ((x-m)/ s)(S) + M, where x = raw score,
m = sample mean, s = sample standard deviation,
S = Standard t-score deviation of 10 and M = standard
t-score mean of 50.
3. Standardized scores insure that all scores are
on the same scale of reference and therefore can
be meaningfully compared and contrasted. Standardized
T-scores put all scores on a scale where the mean
or midpoint is 50 and almost all scores fall between
20 and 80.
4. Within the scoring program, T-score conversion
tables for adults and youth exist for each factor
and subfactor for converting raw scores to standardized
T-scores.
(6) Scales
1. Using a T-score scale, low scores of below
20 were rounded up to 20 and high scores above 80
were rounded down to 80, making twenty the lowest
possible score and 80 the highest. Fifty is the
mean and the standard deviation is 10. One standard
deviation above is 60, and one standard deviation
below is 40.
2. The report sets the cutoff points for low and
high at 45 and 55, respectively (½ standard
deviation).
3. Low scores are 44 and below, mid-range are 45
to 55, and high are 56 and above.
4. These categories place approximately one-third
of the scores in the low category, one-third in
the mid-range, and one-third in the high range.
(7) Report Sections
1. Personality Highlights.
The report begins with the personality highlights
based on the six factors (dominance, extroversion,
compassion, conscientiousness, adventurousness,
and innovation). The report begins with the factor
on which an individual had the most extreme score,
i.e., the greatest distance from 50. Therefore,
the dimension reported on should be the one that
most impacts the person’s behavior, which
could be a low if they had an item that scored at
22, which would be 28 points below the mid-range
of 50.
2. Strengths &
Weaknesses. Typical strengths is the next
section. These are generated from the sixteen subfactors
that relate to the six personality factors. The
typical weaknesses section which follows is also
derived from the sixteen subfactors. A strength
and corresponding weakness sentence is generated
for each subfactor for which there is a high or
low score. There are no statements in the strengths
and weaknesses section for a subfactor if an individual’s
score is in the mid-range section of a subfactor.
Therefore, if a client has a lot of balanced subfactors,
they will have a lower number of strengths and weaknesses
listed in the report.
3. Career Implications.
The career implications section is generated
from the six major factors, not the subfactors.
Appropriate career area descriptions are determined
by low, mid-range, or high scores on the factors.
4. Critical Life
Issues. The critical life issues section
contains the stress dimension, which is designed
to help the person recognize that stress often accompanies
transitions in a career. Paragraphs are determined
by a low, mid-range, or high score on the stress
factor.
The indebtedness and financial management sections
consist of paragraphs based on the low, mid-range,
or high scores on the two money factors.
5. Summary. The
final part of the Personality Section is the summary.
There is a bullet for each of the six major factors
indicating the low, mid-range, or high range in
which the score falls and a brief summary of each
particular dimension. A bar graph shows the dimensions
and actual scores. The intent of the summary is
to provide a quick overview of the Personality Section.
6. Personality Summary
page. The summary page is a one-page recap
of all the information gleaned from the Personality
Section. It contains Factors, Subfactors, and Life
Issues.
(8) Validity Evidence
Construct Validity:
To provide evidence of construct validity, the instrument
was correlated with Hogan’s (1986) Personality
Inventory and Costa and McCrae’s (1985) measure
of the “Big Five,” the NEO-PI.
1. Extroversion strongly related to the NEO-PI’s
measure of extraversion r= .82, p < .0001) and
Hogan’s measures of sociability r= .52, p
< .0001) and ambition r= .52, p < .0001).
2. Conscientiousness correlated highly with the
NEO-PI’s measure of conscientiousness r= .78,
p < .0001) and moderately with the Hogan’s
measure of prudence r= .44, p < 0001).
3. Compassion significantly related with the NEO-PI’s
agreeableness r= .57, p < .0001) and the Hogan’s
likability scale r= .61, p < .0001).
4. Adventurousness moderately related to the NEO-PI’s
extroversion r= .51, p < .0001) and the Hogan’s
ambition scale (N = .55, p < .0001).
5. Dominance correlated moderately with the NEO-PI’s
extroversion r= .33, p < .0001) and conscientiousness
r= .36, p < .0001). Further, the scale correlated
moderately with Hogan’s ambition scale r=
.54, p < .0001).
6. Innovation correlated moderately with the NEO-PI’s
openness r= .47, p < .0001) and with the Hogan’s
intellectance scale r= .55, p < .0001).
7. Correlations of the Personality Report factors
of extroversion, conscientiousness, adventurousness,
dominance, and innovation scales, with the Marlowe-Crowne
scale of social desirability were negligible with
a range from r = .05 to r = .19. Compassion r= -.32,
p < .0001) and stress r= .32, p < .0001) were
somewhat higher, but these were still acceptable
and lower than the correlations between the NEO-PI
scales and the Hogan scales with social desirability.
8. Stress highly related to the NEO-PI’s
measure of neuroticism r= .81, p < .0001) and
the Hogan’s adjustment scale ( r = .74, p
< .0001).
Emperical validity:
Further evidence of validity was provided by client
responses to evaluation surveys included in the
returned feedback reports.
1. Accuracy of the personality factors rated by
the clients themselves ranged from 92% to 96%, accuracy
of the strengths, 97%, accuracy of the weaknesses,
83%, and overall helpfulness of the report, 96%.
The lower perceived accuracy of the weaknesses led
to changes in the text to make the statements less
conflicting.
2. Accuracy of the personality factors rated by
a close acquaintance or spouse ranged from 87% to
93%, accuracy of the strengths, 94%, and accuracy
of the weaknesses, 71%. Again, changes were made
in the text to make the statements less conflicting.
(9) Reliability Evidence
1. Internal Consistency Cronbach Alpha ranged from
.86 to .94 for the personality general factor scales,
and .76 to .92 for the personality subfactor scales
(n = 4463).
2. Test-retest Reliability mean correlation and
range:
Time
Frame
1 week (n = 100)
3-6 weeks (n = 166)
6 months (n = 75)
1 year (n = 50) |
Personality
General Factors
.91, .86 to .95
.87, .85 to .90
.84, .81 to .86
.82, .80 to .86 |
Subfactors
.83, .65 to .90
.78, .60 to .87
.61, .58 to .87 |
II. TECHNICAL INFORMATION ON THE
Career Direct®INTERESTS, SKILLS, AND VALUES
SECTIONS
The Interests, Skills, and Values Sections of the
Report measure Interests (Activities, Educational
Subjects, Occupations); Skills/Abilities, Life Values,
and Work Values.
(1) Design Process
1. Both a rational approach and a principal component
factor analytic approach were used to develop the
inventory.
2. Psychologist consultants began by defining the
general dimensions of interests, skills, and values.
3. Next, items were written to rationally measure
these dimensions, covering all aspects of work,
ranging from the most sophisticated to the most
mundane.
4. Factors of activities, occupations, subjects,
and skills dimensions were developed from the sample
subjects’ responses using various statistical
analyses. These included principal components factor
analyses using a rotated varimax procedure. These
analyses helped group the items into factors. Activities
have 36 factors, occupations have 22 factors, and
skills have 14 factors. There are also 18 educational
subjects in the Interests, Skills, and Values sections.
5. Both item level and dimension level analyses
were used to select the best items to measure the
factors. Items that were duplicates, redundant,
or not highly correlated to the factors were dropped.
6. Factor analysis was used to group the activities,
occupations, and subjects factors into 21 General
Interests Career Group dimensions.
(2) Samples
1. A sample (N = 3,859) consisting of a diverse
population was used to revise and refine the Interests,
Skills, and Values Section from the initial inventory
format.
2. A sample (N = 1,048) of adults took the Personality,
Interests, Skills, and Values Sections, along with
the Strong Interest Inventory for construct validity
with the Strong Interest factors. This sample was
selected on the basis of satisfaction and relative
success in an occupational field in which the person
had been for at least three years.
3. A youth sample (N = 572) were a group who were
23 years of age or younger who were primarily college
freshmen from 26 colleges and universities representing
all regions of the country.
4. In 1997, the Interests, Skills, and Values Sections
were further refined on a client sample of 3841
adults and 2540 youth. Item and dimension level
analyses were again used to delete items that were
redundant or heterogeneous with the other items
on a factor. In addition, these large samples allowed
investigation of gender and age differences in the
factor structure of the Interests, Skills, and Values
Section. In order to have identical factors for
all groups, items that were unstable across gender
or age were deleted. New items were written and
added to the inventory based on a rational approach,
with the intention of data collection and future
re-analysis of the factor composition. A revised
inventory was printed and a new computer program
(ISVI4) was written to include: (1) updating the
report and incorporating expanded report feedback,
(2) Windows95 format and updating the database from
MSAccess2.0 to MSAccess97, and (3) collecting of
the new data items.
5. In 1998, a sample set of 8,870 Career Direct
clients was randomly selected from the client database
of the ISVI4 (1997 revision). The sample sets were
separated into adult and youth samples, and equated
for gender in each age group. Items in each category
were re-analyzed using factor analysis and item
analysis techniques. Based on these analyses, decisions
were made to revise and/ or re-name several activity,
occupation, general interest, and skill groups and
to incorporate the changes in the next revision
of the assessment (ISVI5). Several factors incorporated
the new items added in 1997, strengthening and refining
the composition of these factors.
6. In 1999, the CD-ROM version of Career Direct
was introduced, which incorporated the changes in
factors decided upon for the fifth version of the
ISVI portion of the assessment (ISVI5) as described
in item 5. above. The CD-ROM version substantially
changed the report format, combining the personality
and interests, skills, and values sections together
in one report for the first time.
(3) Format
1. The Activities section consists of 192 phrases,
the Educational Subjects consists of 18 areas, and
the Occupations section consists of 116 job titles.
These sections are self-rated on a scale: “Dislike
very much” to “Like very much.”
2. The Skills section consists of 74 phrases which
are self-rated on a scale: “No skill”
to “Very strong skill”. The Work Environment
(12 items), Work Expectations (8 items), and Life
Values (9 items) sections are prioritized and rank
ordered.
(4) Scoring
1. Raw scores for each factor (36 activities, 22
occupations, 18 subjects, 14 skills, and 21 General
Interest Groups) are the sum of the numerical responses
marked for each item of the factor. For example,
a five-word factor with all “5's”, (very
much like me) has a raw score of twenty-five; all
“1's”, (not at all like me) results
in a raw score of five).
2. Average scores for each factor are derived by
dividing the raw score by the number of items in
a factor. This yields an average of the item responses
which is then converted to a 20- 80-scale with 1
= 20, 3 = 50, and 5 = 80.
3. Scores on a 20 - 80- scale insure that all factor
scores are presented on the same scale of reference
and therefore can be meaningfully compared and contrasted.
(5) Scales
1. Using the score scale of 20 to 80, 20 is the
lowest possible score and 80 is the highest. Fifty
indicates an average item score of 3 on a factor.
2. The report sets the cutoff points for low and
high at 44 and 56.
3. Low scores are 44 and below, mid-range are 45
to 55, and high are 56 and above.
(6) Validity Evidence
1. General Interest
Factors were tested for construct validity with
the Strong Vocational Inventory scales. Simple correlations
between appropriate factors were all positively
related at a significant level.
2.
Analyses were conducted to assess
construct validity based on client responses to
evaluation surveys included in the returned feedback
reports.
a. Interests,
Skills, and Values sections-
(1). Accuracy of the Interests scores, 90%.
(2). Accuracy of the Skills scores, 87%.
(3). Helpfulness of the Values sections: Work
Environment, 91%, Work Outcomes, 89%, and
Life Values, 99%.
|
(Note-- The majority of
these clients purchased the assessment and received
the first version 616 of 676). A major revision
was introduced in 2/97 resulted in a much smaller
response rate. As a result of the feedback and further
analysis of the data, another major revision was
introduced as of 8/1/97.
3. Construct
validity studies:
a. Simple correlations
were calculated between Career Direct Occupational
Factors and the Strong Vocational Inventory scales.
The full table consisted of 240 Strong scales and
22 Career Direct Occupational scales. A subset of
the table with correlations (r) above .30 (plus
or minus) between the Strong Holland (RIASEC) scales
and Career Direct scales are as follows (N = 1002,
normative sample of working adults, 1995):
Career
Direct Occupational
Scales |
Strong
Realistic |
Strong
Investigative |
Strong
Artistic |
Strong
Social |
Strong
Enterprising |
Strong
Conventional |
| Skilled Technical |
0.87 |
0.47 |
|
|
|
|
| Professional |
|
|
|
|
|
|
| Outdoors |
0.66 |
0.37 |
|
|
|
|
| Non-technical |
0.48 |
|
|
|
|
|
| Adventure |
0.64 |
0.46 |
|
|
|
|
| Fashion |
|
|
0.56 |
|
|
|
| Service |
|
|
|
|
|
0.45 |
| Science |
|
0.51 |
0.79 |
|
|
|
| Performers |
|
|
|
0.65 |
0.38 |
|
| Writers/ Artists |
|
0.32
|
0.78 |
0.53 |
|
|
| Management |
|
|
|
0.44 |
0.77 |
0.50 |
| Security |
0.35 |
|
|
|
|
|
| Law/ Politics |
|
0.35 |
|
0.42 |
0.48 |
|
| Counseling/ Education
|
|
0.36 |
0.36 |
0.75 |
0.35 |
|
| Animal Services |
0.34 |
0.35 |
|
|
|
|
| Medical |
|
0.44 |
|
0.36 |
|
|
| Financial |
|
0.42 |
|
|
|
0.72 |
| Foreign Service/
Languages |
|
0.33 |
0.50 |
0.44 |
0.33 |
|
| Drivers |
0.48 |
|
|
|
|
|
| Athletes |
0.31 |
|
|
0.36 |
|
|
Note 1: p <
0.001
Note 2: Composition of occupation factors
have changed slightly as item adjustments
have been made from 1995 to 1999. |
|
b. Data from the
normative sample of working adults (N = 1002), 1995,
were entered
into multiple regression analyses to predict Strong
individual occupational scales (105 scales, males
and female) using Career Direct General Interest
factor scores (21), Personality factors (compassion
and extroversion) and personality subfactors (10)
from the remaining four factors. The adjusted R-squared
statistic, which represents the amount of variance
accounted for out of a total of 1.00, ranged from
0.52 (chiropractor) to 0.83 (computer programmer)
for males, and 0.54 (librarian) to 0.86 (veterinarian)
for females. Of the total, 59% of the 105 males
scale equations yielded adjusted R-squares of 0.70
or greater, and 71% of the 105 female scale equations
were 0.70 or greater. This indicates that a combination
of Career Direct interests and personality factors
explained a significant amount of variance on the
Strong occupational scales.
c. Doctoral dissertation,
Using Career Profiles to Differentiate Between Occupations
and Predict Job Satisfaction, 1998 by Cheryl Toth,
Ph.D., IBM Global Systems. Dr. Toth used the data
from the Career Direct normative sample of working
adults to investigate the
person-job fit within occupational groups and differential
occupational activity.
The research indicated that patterns of personality
traits, vocational interests, and skills (abilities)
influence preferences for particular occupations
in Holland’s occupational typology. Descriptive
discriminant analysis combined the four domains
of personality, interests, skills, and work values
into one analysis to test the significance of the
four aspects together in accounting for individual’s
preferences for different occupations. The results
indicated that vocational interests, personality
characteristics, and skills are significantly related
to occupational preference and need to be incorporated
into the assessment process to guide occupational
choice. The investigation of predicting vocational
choice with these multiple simultaneous predictors
had not been evaluated prior to this study.
Multiple regression analysis was used to investigate
whether those variables that differentiate between
occupations also contribute to job satisfaction
based on satisfaction data collected at the same
time as the Career Direct normative data. The results
indicated that work values, while not contributing
to occupational differentiation, did significantly
contribute to satisfaction with one’s job.
This comprehensive study of data from working adults
concluded that in order to help persons improve
the probability of making a satisfying career choice
and to identify stable career paths, one should
include all four domains of vocational interests,
personality characteristics, skills/abilities, and
work values.
The study is being prepared for submission to a
major refereed journal.
(7) Reliability Evidence
Internal Consistency
1. Activities consist of 36 activity clusters with
internal consistency (Cronbach Alpha)
ranging from .78 to .93.
2. Occupations consist of 22 occupational clusters
with internal consistency (Cronbach Alpha)
ranging from .76 to .90.
3. Skills consist of 14 skill clusters with internal
consistency (Cronbach Alpha) ranging from .70 to
.90. Activity, Occupations, and Subject factors
were combined into 21 General Interest clusters
with internal consistency (Cronbach Alpha) ranging
from .82 to .93.
Test - Retest
1. One month
The mean correlation coefficient of the General
Interests between the first and second administrations
was .88 with coefficients ranging from .81 for International
to .93 for Mechanical. These values indicate that
the General Interests factors are stable over time.
The reliability coefficients for the components
comprising the General Interest factors (Activities,
Occupations, and Subjects) are similar. For the
36 activity factors, the reliability coefficients
ranged from .83 (Customer Service) to .94 (Athletic)
with a mean of .88. The reliability coefficients
for the 22 Occupational factors ranged from .80
for Languages to .91 for Adventure, with a mean
correlation of .88. The 18 subject items had a mean
of .79 and ranged from .69 to .88. The mean correlation
for the 14 skill factors was .88, with a range from
.84 for Managing to .94 for Musical skills.
2. Six months
The mean correlation coefficient for the General
Interests Scales between the first and second administration
was .87, ranging from .79 for both International
and Religious to .93 for Adventure. These values
are similar to those from the first test-retest
study and indicate that the factors demonstrate
a very high degree of stability over a longer time
interval. The mean correlations for the Activity,
Occupational, and Subject factors for the six month
retest study were also similar to those yielded
in the study with a much shorter retest interval.
The mean correlation for the Activity factors was
.83 and ranged from .72 to .93. The Occupational
factors yielded a mean correlation of .85 and ranged
from .74 to .95. The mean correlation for the 14
skill factors was .86, with a range from .83 for
Cross-cultural skills to .92 for Mechanical skills.
3. One year
The mean correlation coefficient for the General
Interests Scales between the first and second administration
was .86, ranging from .68 for Religious to .92 for
the Technological, Computational/Financial, and
Security factors. The values are similar to those
from the two shorter interval test-retest studies
with only one hundredth of a correlation point reduction
overall in the second six months. The mean correlations
for the Activity, Occupational, and Subject factors
for the one year retest study were also similar
to those yielded in the study with a much shorter
retest interval. The mean correlation for the Activity
factors was .82 and
ranged from .60 to .91. The Occupational factors
yielded a mean correlation of .82 and ranged from
.74 to .96. The mean correlation for the 14 skill
factors was .81, with a range from .71 for Organizing
skills to .87 for Mechanical skills. The correlations
over one year again confirm a very high degree of
stability over the longer time interval.
Crown Career
Resources Research & Development Team
(Formerly Life Pathways)
BETTE NOBLE,
Senior Research and Development Specialist.
M.S. Industrial and Organizational Psychology, B.S.
Mathematics and Psychology, and Ph.D. course work
in Applied Psychology and Business Management. Twenty-two
years counseling/ management experience and ten
years experience in psychometric research and development
of career testing materials.
GARNETT STOKES,
Test Development Consultant. Ph.D. Industrial
and Organizational Psychology, former Psychology
Department Head, Dean of College of Arts and Sciences,
major research university, Professor of Applied
Psychology, Licensed Industrial Psychologist, and
currently on the Committee on Accreditation of the
American Psychological Association. Twenty-six years
of research and applied experience in test development
and validation, career choice, and selection.
DAVE FRAKES,
Former Crown Career Resources Manager. M.A.
Communications, B.A. Classics. Twenty-one years
experience in government personnel administration,
management, and training. Former career counselor.
Six years in development of career consulting network
and career guidance products. College instructor
in communications and technology.
BRIDGET BOYLE,
Former Research Associate. Ph.D. Industrial
and Organizational Psychology, B.S. Psychology,
and course work in selection and staffing, psychometrics,
and research methodology. Research analyst for national
occupational archive system.
LEE ELLIS, Former
Director of Life Pathways. M.S. Counseling
and Human Development, B.A. History. Seventeen years
experience as a guidance counselor for college students
and adults, co-author of three books on career planning,
and author of book on team building. Nine years
experience in psychometric research and development
of career guidance testing materials.
JACK GIBBS, Former
Vice President of Life Pathways. B.B.A. Sales
Engineering. Background in advertising as well as
Vice President and Account Manager of a nationwide
personnel recruiting firm. Former board member for
several national non-profit organizations. Four
years experience in development of CD-ROM career
guidance system plus a new youth survey.
CHERYL TOTH,
Former Test Development Consultant. Ph.D.
in Applied Psychology, M.A. Industrial and Organizational
Psychology, B.A. Psychology. Performance Consultant
for a large international corporation.