Table 4 Results from two linear mixed models (both N = 2710) testing whether personality predicts facial expressivity, with participant’s expressivity score 1 and 2 in a given conversation as the outcome variables, respectively.

Participant (N = 1290)

57.83%

31.83%

Partner (N = 1318)

0.77%

0.37%

Agreeableness

0.002

2.337

0.019

*

< 0.001

− 0.081

0.935

Extraversion

0.006

3.559

< .001

***

0.01

4.988

< .001

***

Openness

< 0.001

− 0.536

0.592

< 0.001

− 1.258

0.209

Conscientiousness

< 0.001

0.242

0.809

< 0.001

− 0.393

0.695

Neuroticism

0.003

2.651

0.008

**

0.002

1.977

0.048

*