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. 2015 Dec 1;118(1):64–77. doi: 10.1111/bij.12701

Table 3.

Rejection rate and α estimates for data simulated under a constant‐rate Brownian model on trees simulated under time‐variable speciation rates

Tree type Tree size Rejection rate Median α (95% quantiles)
Slow speed‐up 25 0.126 0.443 (0–3.18)
Slow speed‐up 50 0.118 0.34 (0–1.963)
Slow speed‐up 100 0.105 0.22 (0–1.324)
Slow speed‐up 150 0.098 0.189 (0–1.113)
Slow speed‐up 200 0.085 0.162 (0–0.9)
Slow speed‐up 500 0.061 0.096 (0–0.545)
Slow speed‐up 1000 0.061 0.065 (0–0.415)
Rapid speed‐up 25 0.191 0.882 (0–7.012)
Rapid speed‐up 50 0.136 0.603 (0–4.082)
Rapid speed‐up 100 0.122 0.527 (0–3.024)
Rapid speed‐up 150 0.122 0.442 (0–2.485)
Rapid speed‐up 200 0.086 0.349 (0–2.01)
Rapid speed‐up 500 0.079 0.241 (0–1.437)
Rapid speed‐up 1000 0.069 0.183 (0–1.083)
Slow slow‐down 25 0.112 0.278 (0–1.792)
Slow slow‐down 50 0.082 0.14 (0–0.985)
Slow slow‐down 100 0.073 0.091 (0–0.549)
Slow slow‐down 150 0.053 0.055 (0–0.388)
Slow slow‐down 200 0.064 0.05 (0–0.349)
Slow slow‐down 500 0.05 0.028 (0–0.209)
Slow slow‐down 1000 0.042 0.017 (0–0.146)
Rapid slow‐down 25 0.093 0.192 (0–1.45)
Rapid slow‐down 50 0.077 0.118 (0–0.854)
Rapid slow‐down 100 0.058 0.061 (0–0.408)
Rapid slow‐down 150 0.064 0.038 (0–0.329)
Rapid slow‐down 200 0.051 0.029 (0–0.278)
Rapid slow‐down 500 0.036 0.014 (0–0.147)
Rapid slow‐down 1000 0.054 0.006 (0–0.11)

The rejection rate is the proportion of Ornstein Uhlenbeck models favoured relative to a Brownian motion model.