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. 2019 Jan 30;14(1):e0210424. doi: 10.1371/journal.pone.0210424

Table 13. CONNECT selected traits and cognitive abilities.

Descriptives.

T1-Self-report T1-Informant-reporta T2-Self-report T3-Self-report T4-Self-report T5-Self-report
M SD α M SD α M SD α M SD α M SD α M SD α
Age 21.31 3.95 28.51 13.52 21.14 3.60 21.75 3.81 22.36 3.54 23.37 3.42
Gender 101 ♀ 23♂ 172 ♀ 72♂ 85 ♀ 21♂ 91 ♀ 17 ♂ 85 ♀ 14 ♂ 76 ♀ 16 ♂
Big Five
Neuroticism 4.61 1.30 .77 4.03 1.05 .73 4.38 1.32 .81 4.22 1.36 .84 3.95 1.37 .84 3.96 1.33 .84
Extraversion 5.11 1.11 .85 5.39 0.94 .80 5.15 0.98 .77 5.20 0.94 .77 5.11 1.19 .87 5.10 1.14 .86
Openness 5.15 1.17 .72 5.17 0.87 .67 5.06 1.11 .76 5.08 1.22 .79 5.07 1.25 .83 5.04 1.15 .80
Agreeableness 5.02 0.79 .56 5.34 0.74 .71 4.91 0.76 .57 4.94 0.72 .52 5.13 0.85 .70 5.14 0.86 .74
Conscientiousness 5.45 1.06 .71 6.11 0.80 .76 5.15 1.06 .72 5.05 1.04 .72 5.18 1.08 .75 5.09 1.05 .72
Self-esteem and self-concept
RSES 3.21 0.56 .89 3.26 0.40 .89 3.19 0.55 .91 3.25 0.47 .86 3.29 0.51 .88 3.33 0.57 .92
SAQ 6.37 0.86 .66 7.26 0.73 .69 6.29 0.86 .68 6.35 0.79 .62 6.32 0.78 .63 6.26 0.76 .64
Narcissism and dark triad
NPIb 14.93 5.76 .78 4.62 2.69 .81 13.09 5.01 .73 13.68 5.26 .74 12.41 5.64 .80 12.04 4.60 .69
NARQ-Admiration 3.17 0.69 .79 3.07 0.64 .83 3.07 0.67 .79 3.22 0.69 .83 3.08 0.77 .85 3.00 0.73 .83
NARQ-Rivalry 2.10 0.61 .77 1.81 0.53 .85 2.01 0.61 .80 2.15 0.64 .81 1.94 0.57 .76 1.88 0.54 .75
DIDO-Machiavellianism 2.78 1.36 .75 2.12 0.90 .75 2.77 1.31 .76 3.09 1.42 .83 2.77 1.24 .71 2.79 1.35 .78
DIDO-Psychopathy 2.38 1.09 .43 2.16 0.97 .67 2.46 1.11 .49 2.75 1.31 .64 2.48 1.22 .66 2.44 1.26 .67
DIDO-Narcissism 4.39 1.57 .76 3.25 1.45 .84 4.13 1.73 .82 4.56 1.56 .82 4.28 1.64 .80 4.10 1.77 .84
Cognitive abilities (between T3 and T4)
WMC — solved equations 52.15 5.35 .73
WMC — memory span 5.11 2.33 .71
MWTB 29.36 1.87 .19
Short Raven 9.32 2.48 .56

Note. Ns range from 92 to 124. M = mean, SD = standard deviation, α = Cronbach’s alpha. RSES = Rosenberg Self-Esteem Scale, SAQ = Self-Attributes Questionnaire, NPI = Narcissistic Personality Inventory, NARQ = Narcissistic Admiration and Rivalry Questionnaire, DIDO = Dirty Dozen, WMC = Working memory capacity, MWTB = Vocabulary Knowledge Test [Mehrfachwahl-Wortschatz-Test]. Scales: Big Five 1 to 7, RSES 1 to 4, SAQ 1 to 10, NPI 0 to 40, NARQ 1 to 6, DIDO 1 to 9, WMC — solved equations 0 to 60, WMC — memory span 0 to 8, MWTB 0 to 36, Short Raven 0 to 15.

aInformant-results for M and SD refer to the mean acquaintance report per person. For alpha results, informant-ratings were aggregated before calculation.

bA short version (15 items, range 0 to 15) of the NPI was used for the informant-report.