bfi: 25 Personality items representing 5 factors

Description Usage Format Details Note Source References See Also Examples

Description

25 personality self report items taken from the International Personality Item Pool (ipip.ori.org) were included as part of the Synthetic Aperture Personality Assessment (SAPA) web based personality assessment project. The data from 2800 subjects are included here as a demonstration set for scale construction, factor analysis, and Item Response Theory analysis. Three additional demographic variables (sex, education, and age) are also included.

Usage

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Format

A data frame with 2800 observations on the following 28 variables. (The q numbers are the SAPA item numbers).

A1

Am indifferent to the feelings of others. (q_146)

A2

Inquire about others' well-being. (q_1162)

A3

Know how to comfort others. (q_1206)

A4

Love children. (q_1364)

A5

Make people feel at ease. (q_1419)

C1

Am exacting in my work. (q_124)

C2

Continue until everything is perfect. (q_530)

C3

Do things according to a plan. (q_619)

C4

Do things in a half-way manner. (q_626)

C5

Waste my time. (q_1949)

E1

Don't talk a lot. (q_712)

E2

Find it difficult to approach others. (q_901)

E3

Know how to captivate people. (q_1205)

E4

Make friends easily. (q_1410)

E5

Take charge. (q_1768)

N1

Get angry easily. (q_952)

N2

Get irritated easily. (q_974)

N3

Have frequent mood swings. (q_1099

N4

Often feel blue. (q_1479)

N5

Panic easily. (q_1505)

O1

Am full of ideas. (q_128)

O2

Avoid difficult reading material.(q_316)

O3

Carry the conversation to a higher level. (q_492)

O4

Spend time reflecting on things. (q_1738)

O5

Will not probe deeply into a subject. (q_1964)

gender

Males = 1, Females =2

education

1 = HS, 2 = finished HS, 3 = some college, 4 = college graduate 5 = graduate degree

age

age in years

Details

The first 25 items are organized by five putative factors: Agreeableness, Conscientiousness, Extraversion, Neuroticism, and Opennness. The scoring key is created using make.keys, the scores are found using score.items.

These five factors are a useful example of using irt.fa to do Item Response Theory based latent factor analysis of the polychoric correlation matrix. The endorsement plots for each item, as well as the item information functions reveal that the items differ in their quality.

The item data were collected using a 6 point response scale: 1 Very Inaccurate 2 Moderately Inaccurate 3 Slightly Inaccurate 4 Slightly Accurate 5 Moderately Accurate 6 Very Accurate

as part of the Synthetic Apeture Personality Assessment (SAPA https://sapa-project.org) project. To see an example of the data collection technique, visit https://SAPA-project.org or the International Cognitive Ability Resource at https://icar-project.com. The items given were sampled from the International Personality Item Pool of Lewis Goldberg using the sampling technique of SAPA. This is a sample data set taken from the much larger SAPA data bank.

Note

The bfi data set and items should not be confused with the BFI (Big Five Inventory) of Oliver John and colleagues (John, O. P., Donahue, E. M., & Kentle, R. L. (1991). The Big Five Inventory–Versions 4a and 54. Berkeley, CA: University of California,Berkeley, Institute of Personality and Social Research.)

Source

The items are from the ipip (Goldberg, 1999). The data are from the SAPA project (Revelle, Wilt and Rosenthal, 2010) , collected Spring, 2010 ( https://sapa-project.org).

References

Goldberg, L.R. (1999) A broad-bandwidth, public domain, personality inventory measuring the lower-level facets of several five-factor models. In Mervielde, I. and Deary, I. and De Fruyt, F. and Ostendorf, F. (eds) Personality psychology in Europe. 7. Tilburg University Press. Tilburg, The Netherlands.

Revelle, W., Wilt, J., and Rosenthal, A. (2010) Individual Differences in Cognition: New Methods for examining the Personality-Cognition Link In Gruszka, A. and Matthews, G. and Szymura, B. (Eds.) Handbook of Individual Differences in Cognition: Attention, Memory and Executive Control, Springer.

Revelle, W, Condon, D.M., Wilt, J., French, J.A., Brown, A., and Elleman, L.G. (2016) Web and phone based data collection using planned missing designs. In Fielding, N.G., Lee, R.M. and Blank, G. (Eds). SAGE Handbook of Online Research Methods (2nd Ed), Sage Publcations.

See Also

bi.bars to show the data by age and gender, irt.fa for item factor analysis applying the irt model.

Examples

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data(bfi)
describe(bfi)
 
 keys.list <-
  list(agree=c("-A1","A2","A3","A4","A5"),conscientious=c("C1","C2","C3","-C4","-C5"),
extraversion=c("-E1","-E2","E3","E4","E5"),neuroticism=c("N1","N2","N3","N4","N5"),
openness = c("O1","-O2","O3","O4","-O5")) 
 scores <- scoreItems(keys.list,bfi,min=1,max=6) #specify the minimum and maximum values
 scores
 #show the use of the fa.lookup with a dictionary
 keys.lookup(keys.list,bfi.dictionary[,1:4])
 

Example output

          vars    n  mean    sd median trimmed   mad min max range  skew
A1           1 2784  2.41  1.41      2    2.23  1.48   1   6     5  0.83
A2           2 2773  4.80  1.17      5    4.98  1.48   1   6     5 -1.12
A3           3 2774  4.60  1.30      5    4.79  1.48   1   6     5 -1.00
A4           4 2781  4.70  1.48      5    4.93  1.48   1   6     5 -1.03
A5           5 2784  4.56  1.26      5    4.71  1.48   1   6     5 -0.85
C1           6 2779  4.50  1.24      5    4.64  1.48   1   6     5 -0.85
C2           7 2776  4.37  1.32      5    4.50  1.48   1   6     5 -0.74
C3           8 2780  4.30  1.29      5    4.42  1.48   1   6     5 -0.69
C4           9 2774  2.55  1.38      2    2.41  1.48   1   6     5  0.60
C5          10 2784  3.30  1.63      3    3.25  1.48   1   6     5  0.07
E1          11 2777  2.97  1.63      3    2.86  1.48   1   6     5  0.37
E2          12 2784  3.14  1.61      3    3.06  1.48   1   6     5  0.22
E3          13 2775  4.00  1.35      4    4.07  1.48   1   6     5 -0.47
E4          14 2791  4.42  1.46      5    4.59  1.48   1   6     5 -0.82
E5          15 2779  4.42  1.33      5    4.56  1.48   1   6     5 -0.78
N1          16 2778  2.93  1.57      3    2.82  1.48   1   6     5  0.37
N2          17 2779  3.51  1.53      4    3.51  1.48   1   6     5 -0.08
N3          18 2789  3.22  1.60      3    3.16  1.48   1   6     5  0.15
N4          19 2764  3.19  1.57      3    3.12  1.48   1   6     5  0.20
N5          20 2771  2.97  1.62      3    2.85  1.48   1   6     5  0.37
O1          21 2778  4.82  1.13      5    4.96  1.48   1   6     5 -0.90
O2          22 2800  2.71  1.57      2    2.56  1.48   1   6     5  0.59
O3          23 2772  4.44  1.22      5    4.56  1.48   1   6     5 -0.77
O4          24 2786  4.89  1.22      5    5.10  1.48   1   6     5 -1.22
O5          25 2780  2.49  1.33      2    2.34  1.48   1   6     5  0.74
gender      26 2800  1.67  0.47      2    1.71  0.00   1   2     1 -0.73
education   27 2577  3.19  1.11      3    3.22  1.48   1   5     4 -0.05
age         28 2800 28.78 11.13     26   27.43 10.38   3  86    83  1.02
          kurtosis   se
A1           -0.31 0.03
A2            1.05 0.02
A3            0.44 0.02
A4            0.04 0.03
A5            0.16 0.02
C1            0.30 0.02
C2           -0.14 0.03
C3           -0.13 0.02
C4           -0.62 0.03
C5           -1.22 0.03
E1           -1.09 0.03
E2           -1.15 0.03
E3           -0.47 0.03
E4           -0.30 0.03
E5           -0.09 0.03
N1           -1.01 0.03
N2           -1.05 0.03
N3           -1.18 0.03
N4           -1.09 0.03
N5           -1.06 0.03
O1            0.43 0.02
O2           -0.81 0.03
O3            0.30 0.02
O4            1.08 0.02
O5           -0.24 0.03
gender       -1.47 0.01
education    -0.32 0.02
age           0.56 0.21
Call: scoreItems(keys = keys.list, items = bfi, min = 1, max = 6)

(Unstandardized) Alpha:
      agree conscientious extraversion neuroticism openness
alpha   0.7          0.72         0.76        0.81      0.6

Standard errors of unstandardized Alpha:
      agree conscientious extraversion neuroticism openness
ASE   0.014         0.014        0.013       0.011    0.017

Average item correlation:
          agree conscientious extraversion neuroticism openness
average.r  0.32          0.34         0.39        0.46     0.23

 Guttman 6* reliability: 
         agree conscientious extraversion neuroticism openness
Lambda.6   0.7          0.72         0.76        0.81      0.6

Signal/Noise based upon av.r : 
             agree conscientious extraversion neuroticism openness
Signal/Noise   2.3           2.6          3.2         4.3      1.5

Scale intercorrelations corrected for attenuation 
 raw correlations below the diagonal, alpha on the diagonal 
 corrected correlations above the diagonal:
              agree conscientious extraversion neuroticism openness
agree          0.70          0.36         0.63      -0.245     0.23
conscientious  0.26          0.72         0.35      -0.305     0.30
extraversion   0.46          0.26         0.76      -0.284     0.32
neuroticism   -0.18         -0.23        -0.22       0.812    -0.12
openness       0.15          0.19         0.22      -0.086     0.60

 In order to see the item by scale loadings and frequency counts of the data
 print with the short option = FALSE    ItemLabel                                      Item     Giant3
A1-     q_146 Am indifferent to the feelings of others.   Cohesion
A2     q_1162         Inquire about others' well-being.   Cohesion
A3     q_1206               Know how to comfort others.   Cohesion
A4     q_1364                            Love children.   Cohesion
A5     q_1419                 Make people feel at ease.   Cohesion
C1      q_124                   Am exacting in my work.  Stability
C2      q_530     Continue until everything is perfect.  Stability
C3      q_619            Do things according to a plan.  Stability
C4-     q_626           Do things in a half-way manner.  Stability
C5-    q_1949                            Waste my time.  Stability
E1-     q_712                         Don't talk a lot. Plasticity
E2-     q_901     Find it difficult to approach others. Plasticity
E3     q_1205             Know how to captivate people. Plasticity
E4     q_1410                      Make friends easily. Plasticity
E5     q_1768                              Take charge. Plasticity
N1      q_952                         Get angry easily.  Stability
N2      q_974                     Get irritated easily.  Stability
N3     q_1099                Have frequent mood swings.  Stability
N4     q_1479                          Often feel blue.  Stability
N5     q_1505                             Panic easily.  Stability
O1      q_128                         Am full of ideas. Plasticity
O2-     q_316         Avoid difficult reading material. Plasticity
O3      q_492 Carry the conversation to a higher level. Plasticity
O4     q_1738          Spend time reflecting on things. Plasticity
O5-    q_1964     Will not probe deeply into a subject. Plasticity
                   Big6
A1-       Agreeableness
A2        Agreeableness
A3        Agreeableness
A4        Agreeableness
A5        Agreeableness
C1    Conscientiousness
C2    Conscientiousness
C3    Conscientiousness
C4-   Conscientiousness
C5-   Conscientiousness
E1-        Extraversion
E2-        Extraversion
E3         Extraversion
E4         Extraversion
E5         Extraversion
N1  Emotional Stability
N2  Emotional Stability
N3  Emotional Stability
N4  Emotional Stability
N5  Emotional Stability
O1             Openness
O2-            Openness
O3             Openness
O4             Openness
O5-            Openness

psych documentation built on May 7, 2018, 1:04 a.m.