Table 1.

Summary of the generalized linear mixed model examining the influence of the fixed factors on response latency. (Results of the reduced model (full versus null: χ²₅ = 33.25, p = 3.347 × 10^–6). No collinearity was found between the fixed factors (range vifmin = 1; vifmax = 2.5). The fixed factor call number and the interaction between condition and partner predicted the response latency, whereas the sex combination did not. The response latency to the first call (5.01 ± 0.47 s) was faster than to the second call (20.27 ± 3.38 s). Post hoc analyses revealed that the response latency was significantly faster in the incongruent non-partner condition (8.96 ± 2.86 s) compared to the congruent non-partner condition (20.90 ± 3.60 s; estimate = 11.94, s.e. = 4.0, t = 2.98, p = 0.018). In addition, the response latency was faster in the congruent partner condition (4.23 ± 0.83 s) compared to the congruent non-partner condition (20.90 ± 3.60 s; estimate = 15.64, s.e. = 5.30, t = 2.95, p = 0.019). All other comparisons were not statistically significant (p ≥ 0.43).)

	estimate	s.e.	t	p-value
(intercept)	12.24	3.76
call number	15.26	3.19	4.78	4.977 × 10–6
sex combination	2.05	3.91	0.52	0.59
condition: partner	19.63	6.77	2.89	0.0044