A Comparison Between 33 Scales in Gough's
California Psychological Inventory (CPI) and the
Corresponding 33 Preliminary IPIP Scales Measuring Similar Constructs


SCALE NAMES

   
IPIP CPI
ASSERTIVENESS Dominance (Do)
COMPLEXITY Capacity for Status (Cs)
SOCIABILITY Sociability (Sy)
ADVENTUROUSNESS Social Presence (Sp)
INSIGHT Self-acceptance (Sa)
SELF-EFFICACY Independence (In)
DEPTH Empathy (Em)
RESPONSIBILITY Responsibility (Re)
STABILITY Socialization (So)
SELF-CONTROL Self-control (Sc)
TEMPERANCE Good Impression (Gi)
OPTIMISM Well-being (Wb)
TOLERANCE Tolerance (To)
PLANFULNESS Achievement via Conformance (Ac)
INTELLECT Achievement via Independence (Ai)
COMPREHENSION Intellectual Efficiency (Ie)
COMPETENCE Psychological-mindedness (Py)
DISORDER Flexibility (Fx)
SENTIMENTALITY Femininity (Fe)
INTROVERSION Vector 1 (V1)
DUTIFULNESS Vector 2 (V2)
GOOD-NATURE Vector 3 (V3)
HAPPINESS Managerial Potential (MP)
CALMNESS Work Orientation (WO)
LIBERALISM Creative Temperament (CT)
SECURITY Leadership (Lp)
AMIABILITY Amicability (Ami)
SELF-DISCIPLINE Law Enforcement Orientation (Leo)
POISE Tough-mindedness (Tm)
FORCEFULNESS Masculinity (B-MS)
TIMIDITY Femininity (B-FM)
DOMINANCE Narcissism (Nar)
POLITENESS Social Desirability (D-SD)
---------------------------- --------------------------------------
Mean

Number
of Items

IPIP CPI
6+4 = 10 36
6+4 = 10 28
5+5 = 10 32
6+4 = 10 38
5+5 = 10 28
5+5 = 10 30
5+5 = 10 38
9+1 = 10 36
1+9 = 10 46
3+7 = 10 38
3+7 = 10 40
3+7 = 10 38
2+7 = 9 32
5+5 = 10 38
3+7 = 10 36
6+4 = 10 42
3+7 = 10 28
4+6 = 10 28
8+4 = 12 32
4+6 = 10 34
5+5 = 10 36
1+9 = 10 58
4+6 = 10 34
3+7 = 10 40
2+7 = 9 42
5+5 = 10 70
5+5 = 10 36
5+5 = 10 42
4+6 = 10 36
4+6 = 10 54
2+8 = 10 42
10+1=11 49
2+9 = 11 32
----------- -------
4+6 = 10 38

Mean Item
Intercorrelation

IPIP CPI
.29 .13
.22 .08
.40 .10
.20 .06
.28 .06
.30 .08
.19 .04
.17 .07
.19 .06
.20 .10
.23 .08
.29 .11
.20 .08
.15 .06
.36 .08
.28 .06
.23 .05
.30 .09
.16 .06
.37 .14
.21 .07
.25 .09
.26 .10
.16 .07
.38 .07
.35 .09
.34 .10
.23 .03
.27 .08
.31 .12
.26 .06
.29 .07
.14 .05
--------- ---------
.26 .08

Coefficient
Alpha

IPIP CPI
.80 .85
.73 .69
.87 .78
.71 .73
.78 .65
.81 .70
.69 .64
.66 .72
.70 .72
.71 .79
.75 .78
.80 .80
.69 .71
.62 .69
.85 .75
.80 .73
.74 .55
.80 .72
.70 .66
.85 .85
.73 .74
.77 .85
.77 .79
.66 .73
.85 .76
.84 .87
.83 .79
.75 .53
.79 .74
.82 .88
.77 .72
.82 .79
.64 .62
------- -------
.76 .74


Correlation

IPIP vs. CPI
.76 [.92]
.58 [.82]
.76 [.92]
.62 [.86]
.62 [.87]
.66 [.88]
.57 [.86]
.43 [.62]
.60 [.85]
.64 [.85]
.67 [.88]
.67 [.84]
.58 [.83]
.53 [.81]
.59 [.74]
.61 [.80]
.54 [.85]
.57 [.75]
.66 [.97]
.79 [.93]
.60 [.82]
.56 [.69]
.64 [.82]
.63 [.91]
.57 [.71]
.74 [.87]
.62 [.77]
.58 [.92]
.69 [.90]
.73 [.86]
.65 [.87]
.62 [.77]
.54 [.86]
----------------
.62 [.84]

Note. All analyses are based on the responses of 501 adult participants from the Eugene-Springfield Community Sample. [Values in brackets are the correlations between the corresponding CPI and IPIP scales when corrected for the scale reliabilities.]


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