A Comparison between the 5 Broad
Domains in Costa and McCrae's NEO Personality Inventory (NEO-PI-R) and
the Corresponding IPIP-NEO-60 Scales
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12-Item IPIP-NEO-60 Scales |
Number |
Mean Item |
Coefficient |
Correlation |
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+ - |
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I. Neuroticism |
4+8=12 |
.22 |
.95 |
.84 [.89] |
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II. Extraversion |
11+1=12 |
.16 |
.92 |
.77 [.85] |
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III. Openness |
6+6=12 |
.17 |
.92 |
.78 [.85] |
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IV. Agreeableness |
6+6=12 |
.13 |
.90 |
.71 [.79] |
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V. Conscientiousness |
7+5=12 |
.23 |
.92 |
.69 [.75] |
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Mean |
7+5=10 |
.33 |
.92 |
.76 [.83] |
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48-Item NEO PI-R Scales |
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I. Neuroticism |
27+21=48 |
.22 |
.93 |
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II. Extraversion |
29+19=48 |
.15 |
.89 |
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III. Openness |
24+24=48 |
.17 |
.91 |
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IV. Agreeableness |
26+22=48 |
.14 |
.89 |
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V. Conscientiousness |
28+20=48 |
.19 |
.91 |
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Mean |
27+21=48 |
.17 |
.91 |
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Note. Reliability and validity estimates are based on the Eugene-Springfield community sample of N = 757. This is Sample 2 in Maples-Keller, et al. (2019). [Values in brackets are correlations corrected for unreliability.] Note. The numbers under the "+ -" heading indicate the number of positively and negatively items in the scale. So, for example, "4+8=12" indicates that there are 4 positively keyed items and 8 negatively keyed items, for 12 total items. Reference Maples-Keller, J. L, Williamson, R. L., Sleep, C. E., Carter, N. T., Campbell, W. K., & Miller, J. D. (2019). Using item response theory to develop a 60-item representation of the NEO PI�R using the International Personality Item Pool: Development of the IPIP�NEO�60. Journal of Personality Assessment, 101, 4-15. DOI: 10.1080/00223891.2017.1381968 |
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