Table 1 Sample Characteristics.

Narcissism

3.13 (0.24)

2.24 (0.22)

8.87 ₍₂₀₎

3.97

<0.001

3.13 (0.16)

2.11 (0.24)

11.64 ₍₁₉₎

5.34

<0.001

Self-Esteem

5.63 (0.44)

4.63 (0.72)

3.54 ₍₂₀₎

1.58

0.002

5.57 (0.85)

4.82 (1.02)

1.81 ₍₁₉₎

0.83

0.086

Neuroticism

1.88 (0.48)

2.40 (0.58)

−2.14 ₍₂₀₎

−0.96

0.045

2.04 (0.73)

2.28 (0.73)

−0.74 ₍₁₉₎

−0.34

0.469

Extraversion

3.75 (0.33)

2.90 (0.64)

4.15 _(19.88)

1.86

0.001

3.50 (0.43)

2.53 (0.62)

4.23 ₍₁₉₎

1.94

<0.001

Openness

3.40 (0.44)

3.40 (0.42)

0.00 ₍₂₀₎

0.00

1.00

3.77 (0.26)

3.25 (0.59)

2.35 _(8.64)

1.60

0.045

Agreeableness

1.91 (0.60)

2.59 (0.45)

−3.06 ₍₂₀₎

−1.37

0.006

1.92 (0.60)

2.25 (0.60)

−1.22 ₍₁₉₎

−0.56

0.239

Conscientiousness

3.44 (0.53)

2.95 (0.75)

1.62 ₍₂₀₎

0.72

0.121

3.33 (0.33)

2.78 (0.62)

2.65 ₍₁₉₎

1.22

0.016

Age

24.25 (4.20)

23.43 (3.55)

0.49 ₍₂₀₎

0.22

0.630

23.38 (2.60)

24.63 (3.50)

−0.93 ₍₁₉₎

−0.43

0.363

PAext_Self

4.47 (1.19)

4.48 (1.08)

−0.03 ₍₂₀₎

−0.01

0.979

4.04 (0.87)

3.91 (0.61)

0.38 ₍₁₉₎

0.17

0.711

PAext_Friend

4.06 (0.88)

4.16 (1.26)

−0.19 ₍₂₀₎

−0.08

0.848

3.94 (1.05)

4.03 (0.69)

−0.21 ₍₁₉₎

−0.10

0.834

PAext_Stranger

4.47 (1.09)

4.57 (0.99)

−0.23 ₍₂₀₎

−0.10

0.824

4.06 (0.82)

3.88 (0.61)

0.54 ₍₁₉₎

0.25

0.595

ΔPAext_Self-Friend

0.41 (1.37)

0.32 (1.37)

0.14 ₍₂₀₎

0.06

0.890

0.10 (0.99)

−0.13 (0.88)

0.52 ₍₁₉₎

0.24

0.610

ΔPAext_{Self-Stranger}

0.00 (0.30)

−0.09 (0.25)

0.75 ₍₂₀₎

0.34

0.463

−0.02 (0.22)

0.03 (0.09)

−0.63 ₍₁₉₎

−0.29

0.539

PApart_Self

4.13 (1.25)

3.93 (1.07)

0.39 ₍₂₀₎

0.17

0.701

4.54 (0.88)

3.75 (1.39)

1.44 _(10.49)

0.89

0.179

PApart_Friend

5.25 (1.67)

4.79 (1.25)

0.74 ₍₂₀₎

0.33

0.467

4.46 (1.39)

4.88 (1.55)

−0.63 ₍₁₉₎

−0.29

0.534

PApart_Stranger

4.13 (2.03)

4.50 (1.02)

−0.49 _(9.06)

−0.33

0.637

4.46 (0.88)

4.25 (1.58)

0.40 ₍₁₉₎

0.18

0.696

ΔPApart_Self-Friend

−1.13 (1.73)

−0.86 (1.35)

−0.41 ₍₂₀₎

−0.18

0.690

0.08 (1.32)

−1.12 (1.13)

2.14 ₍₁₉₎

0.98

0.046

ΔPApart_{Self-Stranger}

0.00 (1.31)

−0.57 (1.50)

0.87 ₍₂₀₎

0.39

0.381

0.08 (1.19)

−0.50 (1.93)

0.85 ₍₁₉₎

0.39

0.404

Task Accuracy (%)

96.53 (00.03)

97.95 (00.02)

−1.47 ₍₂₀₎

−0.66

0.158

97.72 (0.02)

99.42 (0.01)

−2.70 _(15.77)

−1.34

0.016

Task Accuracy_Self (%)

97.57 (00.05)

97.62 (00.03)

−0.03 ₍₂₀₎

−0.01

0.977

98.72 (00.03)

98.96 (00.02)

−0.19 ₍₁₉₎

−0.09

0.850

Task Accuracy_Friend (%)

97.22 (00.03)

98.61 (00.02)

−1.37 ₍₂₀₎

−0.61

0.185

97.44 (00.04)

100.00 (00.00)

−2.52 _(12.00)

−1.45

0.027

Task Accuracy_Stranger (%)

94.79 (00.05)

97.62 (00.03)

−1.70 ₍₂₀₎

−0.76

0.105

97.01 (00.02)

99.31 (00.01)

−2.49 ₍₁₉₎

−1.14

0.022