Douglas
N. Jackson, Ph.D. © 1976, 1992, 1994, 1997
Applications
- In counselling and clinical settings with adults as
well as senior high school and college students
- In business and industrial settings
- Psychological research, including studies in sport
psychology and recreation
Description
The JPI-R is a revision of the original JPI. Like its predecessor,
the JPI-R assesses personality variables relevant to the functioning
of a person in a wide range of settings such as those involving
work, educational/organizational behavior, or interpersonal situations.
The JPI-R contains a total of 300 True/False items and takes about
45 minutes to administer. Revisions to the original JPI materials
include (a) updated college norms, (b) entirely new norms for blue
and white collar workers, (c) renaming of some scales to better
reflect scale content, (d) scale organisation in terms of five higher-order
dimensions, (e) removal of the Infrequency scale to facilitate use
for employment screening, (f) coverage of extended distributional
characteristics, (g) compilation of new research findings, (h) addition
of scale-by-scale item lists to promote scale interpretation, (i)
a glossary of technical terms to facilitate understanding of the
often sophisticated procedures used in constructing the JPI and
JPI-R
The JPI-R's 15 scales are as follows, organised in terms of five
higher-order clusters:
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Analytical:
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Complexity, Breadth of Interest, Innovation, Tolerance
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Extroverted:
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Sociability, Social Confidence, Energy Level
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Emotional:
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Empathy, Anxiety, Cooperativeness
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Opportunistic:
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Social Astuteness, Risk Taking
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Dependable:
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Organisation, Traditional Values, Responsibility
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The statistical procedures employed in the construction
of the JPI are among the most elaborate ever employed for
a personality test. Starting with a very large item pool,
two separate item analyses on separate samples were undertaken
to further three general aims: (a) to maximise item content
saturation in relation to desirability variance; (b) to
maximise scale reliabilities; and (c) to minimise inter
scale redundancy.
Reliability and Validity
The items on the JPI-R are the same as those
included in the original JPI (with minor exceptions in
the case of the Traditional Values scale). Accordingly,
findings bearing on the JPI's psychometric properties are
applicable to the JPI-R. In two studies, median internal
consistency reliabilities (Bentler’s Theta) were
.90 and .93. Data on JPI validity include analyses of two
multitrait-multi-method matrices employing adjective checklist,
self rating, and peer ratings. Hundreds of correlations
of JPI scales with a variety of criteria, ranging from
occupational preferences to attitudes toward marijuana
use, are reported in the manual.
The JPI-R Bas ic Report consists of a profile
of the 15 JPI-R scale scores, descriptions of high and
low scorers for each scale, a profile of the 5 JPI-R cluster
scores, administrative indices and a table of raw responses.
The JPI-R is available to those individuals who
have completed an advanced level university course in psychological
testing at the Master's level, as well as training under
the supervision of a qualified psychologist.
(Available for clients overseas)
