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. Author manuscript; available in PMC: 2020 Oct 1.
Published in final edited form as: J Pers Soc Psychol. 2018 Aug 13;117(4):e51–e70. doi: 10.1037/pspp0000211

Table 8.

Standardized Polynomial Regression Coefficients and Response Surface Parameters of Actor- and Partner Personality Predicting Support

Extraversion Neuroticism Agreeableness Conscientiousness Openness
Polynomial Regression Parameters
b1 Actor .14**
[.12, .16]		 −.16**
[−.17, −.14]		 .13**
[.11, .16]		 .13**
[.11, .15]		 .10**
[.08, .12]
b2 Partner .08**
[.06, .10]		 −.10**
[−.12, −.08]		 .09**
[.07, .12]		 .10**
[.08, .12]		 .08**
[.06, .10]
b3 Actor2 −.02**
[−.04, −.01]		 −.02**
[−.04, −.01]		 −.02**
[−.03, .00]		 −.02**
[−.04, −.01]		 −.04**
[−.06, −.03]
b4 Actor* Partner .02
[.00, .04]		 0.01
[−.01, .03]		 .02*
[.00, .04]		 .03**
[.01, .06]		 .06**
[.04, .08]
b5 Partner2 −.03**
[−.04, −.01]		 −.02**
[−.04, −.01]		 −.03**
[−.05, −.02]		 −.05**
[−.06, −.04]		 −.04**
[−.06, −.03]
Response Surface Parameters
a1 (b1 + b2) .22**
[.19, .25]		 −.26**
[−.29, −.23]		 .23**
[.19, .26]		 .23**
[.20, .27]		 .18**
[.15, .21]
a2 (b3 + b4 + b5) −.03*
[−.06, .00]		 −.04*
[−.06, −.01]		 −.03
[−.06, .00]		 −.04**
[−.06, −.01]		 −.02
[−.05, .00]
a3 (b1 – b2) .07**
[.04, .09]		 −.05**
[−.08, −.03]		 .04**
[.01, .07]		 .03
[.00, .05]		 .02
[−.01, .04]
a4 (b3 – b4 + b5) −.07**
[−.10, −.04]		 −.05**
[−.09, −.01]		 −.07**
[−.10, −.04]		 −.11**
[−.14, −.07]		 −.14**
[−.18, −.10]
a5 (b3 – b5) .01
[−.01, .02]		 .00
[−.02, .02]		 .01
[.00, .03]		 .03**
[.01, .05]		 .00
[−.02, .02]
Similarity effect? No, a3 ≠ 0 No, a3 ≠ 0 No, a3 ≠ 0 No, a5 ≠ 0 yes

Note. The 95% confidence intervals are represented within brackets. All polynomial models included control variables.

*

p < .05

**

p < .01