A Comparison between the Scales in the
Hogan Personality Inventory (HPI) and
the Corresponding Preliminary IPIP Scales
Measuring Similar Constructs



SCALE NAMES

   
IPIP HPI
7 Higher-Level HPI Constructs
Stability Adjustment
Leadership Ambition
Sociability Sociability
Friendliness Likeability
Dutifulness Prudence
Creativity Intellectance
Quickness School Success
Means of higher-level scales

6 Occupational Scales
Calmness Service Orientation
Happiness Stress Tolerance
Cooperation Reliability
Toughness Clerical Potential
Gregariousness Sales Potential
Competence Managerial Potential
Means of occupational scales

44 Homogeneous Item Clusters (HICs)
Empathy
Not anxious
No guilt
Calmness
Even-tempered
No somatic complaints
Trusting
Good attachment

Competitive
Self confidence
No depression
Leadership
Identity
No social anxiety

Likes parties
Likes crowds
Experience-seeking
Exhibitionistic
Entertaining

Easy to live with
Sensitive
Caring
Likes people
No hostility

Moralistic
Mastery
Virtuous
Not autonomous
Not spontaneous
Impulse control
Avoids trouble

Science ability
Curiosity
Thrill-seeking
Intellectual games
Generates ideas
Culture

Education
Math ability
Good memory
Reading

Self focus
Impression management
Appearance
Means of lower-level scales


Number
of Items

IPIP HPI

5+5 = 10
37
5+5 = 10
29
8+2 = 10
24
5+5 = 10
22
5+5 = 10
31
5+5 = 10
25
6+4 = 10
14
6+4 = 10
26

   
5+5 = 10
14
4+6 = 10
25
1+9 = 10
18
5+5 = 10
24
5+5 = 10
67
5+5 = 10
37
4+6 = 10
31

   
3+3 = 6
5
3+3 = 6
4
3+3 = 6
6
3+3 = 6
4
2+4 = 6
5
0+6 = 6*
5
3+3 = 6
3
1+5 = 6*
5

3+3 = 6
5
3+3 = 6
3
3+3 = 6
6
4+2 = 6
6
0+6 = 6*
3
3+3 = 6
6

3+2 = 5
5
4+2 = 6*
4
3+3 = 6
6
3+3 = 6
5
4+1 = 5
4

4+2 = 6
5
3+3 = 6
4
4+2 = 6
4
3+3 = 6
6
2+4 = 6
3

3+2 = 5*
5
3+3 = 6
4
1+5 = 6*
5
3+2 = 5
3
0+6 = 6*
4
3+3 = 6
5
0+6 = 6*
5

5+1 = 6
5
6+0 = 6*
3
5+2 = 7*
5
2+5 = 7*
3
3+3 = 6
5
3+3 = 6
4

5+2 = 7*
3
3+3 = 6*
3
4+1 = 5
4
4+2 = 6
4

5+1 = 6
4
6+0 = 6*
4
2+2 = 4
4
3+3 = 6
4


Mean Item
Intercorrelation

IPIP HPI

.39 .15
.31 .20
.23 .16
.37 .13
.27 .07
.32 .12
.33 .19
.32 .15


.24 .10
.39 .20
.25 .14
.25 .09
.39 .09
.31 .10
.30 .12

   
.39 .25
.38 .53
.30 .27
.35 .18
.41 .23
.27 .21
.33 .31
.17 .42

.28 .20
.32 .37
.40 .37
.42 .50
.41 .61
.32 .33

.29 .26
.20 .50
.25 .26
.45 .36
.52 .34

.24 .21
.21 .09
.34 .20
.43 .35
.34 .20

.32 .15
.30 .12
.29 .09
.28 .44
.21 .15
.28 .23
.23 .21

.20 .31
.25 .35
.27 .28
.13 .24
.40 .29
.37 .27

.35 .54
.11 .53
.44 .23
.41 .38

.38 .36
.26 .21
.35 .17
.31 .30


Coefficient
Alpha

IPIP HPI

.86 .87
.82 .87
.75 .83
.86 .74
.78 .69
.83 .78
.82 .76
.82 .79


.76 .64
.87 .86
.76 .74
.77 .73
.86 .87
.80 .79
.80 .77

   
.79 .62
.79 .82
.71 .69
.75 .44
.81 .59
.68 .56
.74 .56
.55 .78

.70 .55
.74 .60
.81 .78
.81 .86
.80 .82
.74 .75

.68 .67
.64 .80
.66 .68
.83 .74
.84 .67

.66 .55
.61 .29
.75 .43
.82 .75
.75 .43

.70 .46
.72 .34
.70 .34
.66 .70
.61 .36
.70 .60
.64 .53

.60 .69
.66 .64
.72 .65
.50 .50
.80 .67
.77 .59

.79 .77
.44 .78
.80 .54
.80 .71

.78 .69
.68 .51
.68 .44
.71 .61



Correlation

IPIP vs. HPI
 
.74 [.86]
.77 [.91]
.73 [.93]
.67 [.84]
.67 [.91]
.67 [.83]
.64 [.81]
70 [.87]

 
.69 [.99]
.74 [.86]
.63 [.84]
.67 [.89]
.73 [.84]
.62 [.78]
.68 [.87]

 
.65 [.93]
.64 [.80]
.64 [.91]
.62 [.99]
.60 [.87]
.47 [.76]
.56 [.87]
.46 [.70]

.58 [.93]
.63 [.95]
.66 [.83]
.66 [.79]
.54 [.67]
.68 [.91]

.66 [.98]
.59 [.82]
.63 [.94]
.64 [.82]
.64 [.85]

.54 [.90]
.43 [.99]
.56 [.99]
.69 [.88]
.54 [.95]

.36 [.63]
.47 [.95]
.45 [.92]
.56 [.82]
.45 [.96]
.65 [.99]
.49 [.84]

.45 [.70]
.56 [.86]
.53 [.77]
.37 [.74]
.67 [.92]
.59 [.88]

.44 [.56]
.66 [.99]
.49 [.75]
.74 [.98]

.44 [.60]
.50 [.85]
.55 [.99]
.56 [.86]

Note. All analyses are based on the responses of 501 adult subjects from the Eugene-Springfield Community Sample. [Values in brackets are the correlations between the corresponding HPI and IPIP scales when corrected for attenuation due to scale unreliability.] There are 206 items in the HPI.

* Scale has been augmented with items that correlate more highly with other HPI constructs.


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Multiple Constructs