Studies

Reliability Studies
Case Study results
Myers-Briggs Type
Indicator (MBTI)
Millon Index of Personality
Styles (MIPS)
Sixteen Personality
Factors (16PF)

Inter-rater Reliability Study

A large study compared the “Self” responses of four separate groups. All four groups attended a well-known Eastern U.S. University and while the student population was diverse, the students selected four different classrooms based on their unique scheduling issues. Total “N” = 105 in four self-randomized groups. Scores created by all participants in the "Pre" assessment were averaged and correlated with each other group.

Average reliability coefficient of: Pearson r = .985
University Class Section Group #1 Group #2 Group #3 Group #4

Group #1
(N = 31)

- .99 .99 .98

Group #2
(N = 33)

  - .99 .98

Group #3
(N = 29)

    - .98

Group #4
(N = 12)

      -


Because it could be easily argued that the “polarity” of the GEMA™-Lead360 instrument creates artificially high correlations, the analysis below created inter-rater correlations within the “Self Above Service” and “Service Above Self” items, separately. The results are listed below.

Self Above Service Items

University Class Section Group #1 Group #2 Group #3 Group #4

Group #1

- .92 .88 .88

Group #2

  - .90 .89

Group #3

    - .86

Group #4

      -

 

Service Beyond Self Items

University Class Section Group #1 Group #2 Group #3 Group #4

Group #1

- .91 .91 .86

Group #2

  - .91 .86

Group #3

    - .87

Group #4

      -

Average reliability coefficient of: Pearson r = .89

Test and Re-Test Reliability Correlation Coefficients

Linear Correlations (Pearson Product-Moment “r” )

Pre-Post Scores Across All Five Specific Scores for each Area Score and Group

University Students Arbitrarily Attending Four Separate Classes

Test / Re-test Reliability (three month time gap)
Pre-“N” = 105
Post-“N” = 86
Correlations across five “specific scores” within each area score

Self Above Service

Service Beyond Self

Group 1 Group 2 Group 3 Group 4 Group 1 Group 2 Group 3 Group 4
Entitlement Contribution
Pre-Post Correlations
.88 77 .94 .98 .95 .97 .98 .78
  Domination Cooperation
Pre-Post Correlations .99 .97 .95 .79 .92 .99 .95 .96
  Withdrawal Connection
Pre-Post Correlations
.88 .89 .98 .88 .67 .90 .88 .73

 

In summary, because the items are behaviorally oriented, the reliability of GEMA™-Lead360 is very robust.

------

Go to Case Study
Go to Validity Study