Table 3 Interaction terms for time (T1–T3) and experimental condition and for time, experimental condition and group for all outcome variables

From: A post-Brexit intergroup contact intervention reduces affective polarization between Leavers and Remainers short-term

Variable

Interaction terms

Time × Condition

Time × Condition × Group

Outgroup affect and cognition

Feeling thermometer

B = −0.77, SE = 3.94, 95% CI [−8.48, 6.95], Z = −0.19, p = 0.846, ΔR2 = 0.00

B = −1.40, SE = 7.21, 95% CI [−15.53, 12.74], Z = −0.19, p = 0.846, ΔR2 = 0.00

Negative emotions

B = −0.13, SE = 0.14, 95% CI [−0.40, 0.15], Z = −0.92, p = 0.356, ΔR2 = 0.001

B = 0.29, SE = 0.30, 95% CI [−0.31, 0.88], Z = 0.95, p = 0.343, ΔR2 = 0.001

Stereotype: Intolerant

B = 0.20, SE = 0.36, 95% CI [−0.50, 0.91], Z = 0.57, p = 0.570, ΔR2 = 0.001

B = 0.97, SE = 0.65, 95% CI [−0.31, 2.25], Z = 1.48, p = 0.138, ΔR2 = 0.004

Stereotype: Intelligent

B = 0.06, SE = 0.32, 95% CI [−0.57, 0.69], Z = 0.20, p = 0.844, ΔR2 = 0.00

B = 0.93, SE = 0.75, 95% CI [−0.54, 2.40], Z = 1.24, p = 0.214, ΔR2 = 0.01

Rationality

B = 0.21, SE = 0.23, 95% CI [−0.23, 0.66], Z = 0.95, p = 0.340, ΔR2 = 0.01

B = 0.40, SE = 0.47, 95% CI [−0.54, 1.32], Z = 0.83, p = 0.405, ΔR2 = 0.00

Emotionality

B = 0.29, SE = 0.34, 95% CI [−0.37, 0.95], Z = 0.85, p = 0.394, ΔR2 = 0.003

B = −0.07, SE = 0.70, 95% CI [−1.43, 1.30], Z = −0.10, p = 0.924, ΔR2 = 0.00

Externality

B = 0.05, SE = 0.30, 95% CI [−0.54, 0.65], Z = 0.17, p = 0.865, ΔR2 = 0.00

B = −0.25, SE = 0.66, 95% CI []−1.56, 1.05], Z = −0.38, p = 0.702, ΔR2 = 0.00

Contempt

B = 0.09, SE = 0.20, 95% CI [−0.29, 0.48], Z = 0.48, p = 0.634, ΔR2 = 0.001

B = 0.02, SE = 0.53, 95% CI [−1.03, 0.89], Z = 0.03, p = 0.977, ΔR2 = 0.00

Meta-beliefs

Meta-emotions

B = 0.07, SE = 0.31, 95% CI [−0.54, 0.67], Z = 0.22, p = 0.823, ΔR2 = 0.00

B = −0.34, SE = 0.60, 95% CI [−1.51, 0.84], Z = −0.56, p = 0.574, ΔR2 = 0.00

Meta-stereotype: Intelligent

B = −0.47, SE = 0.28, 95% CI [−1, 0.06], Z = −1.70, p = 0.089, ΔR2 = 0.002

B = −0.62, SE = 0.91, 95% CI [−2.40, 1.15], Z = −0.69, p = 0.491, ΔR2 = 0.002

Meta-stereotype: Intolerant

B = −0.53, SE = 0.39, 95% CI [−1.30, 0.24], Z = −1.36, p = 0.175, ΔR2 = 0.003

B = 1.13, SE = 0.90, 95% CI [−0.62, 2.89], Z = 1.27, p = 0.206, ΔR2 = 0.01

Political outcomes

Compromise

B = 0.03, SE = 0.21, 95% CI [−0.38, 0.44], Z = 0.13, p = 0.894, ΔR2 = 0.00

B = −0.43, SE = 0.38, 95% CI [−1.18, 0.32], Z = −1.11, p = 0.266, ΔR2 = 0.003

Brexit beliefs

B = −0.05, SE = 0.14, 95% CI [−0.32, 0.22], Z = −0.37, p = 0.710, ΔR2 = 0.00

B = −0.01, SE = 0.31, 95% CI [−0.61, 0.59], Z = −0.03, p = 0.974, ΔR2 = 0.00

Collective action

B = 0.10, SE = 0.38, 95% CI [−0.64, 0.84], Z = 0.26, p = 0.792, ΔR2 = 0.00

B = 0.21, SE = 0.53, 95% CI [−0.83, 1.26], Z = 0.40, p = 0.692, ΔR2 = 0.002

Traditional contact mediators

Intergroup anxiety

B = −0.13, SE = 0.26, 95% CI [−0.64, 0.37], Z = −0.52, p = 0.603, ΔR2 = 0.00

B = 0.20, SE = 0.55, 95% CI [−0.87, 1.27], Z = 0.37, p = 0.713, ΔR2 = 0.02

Empathy

B = 0.11, SE = 0.28, 95% CI [−0.44, 0.65], Z = 0.38, p = 0.705, ΔR2 = 0.00

B = −0.15, SE = 0.52, 95% CI [−1.16, 0.85], Z = −0.29, p = 0.773, ΔR2 = 0.00

Perspective taking

B = 0.11, SE = 0.26, 95% CI [−0.40, 0.61], Z = 0.41, p = 0.685, ΔR2 = 0.001

B = −0.19, SE = 0.56, 95% CI [−1.29, 0.90], Z = −0.34, p = 0.731, ΔR2 = 0.002

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