Can be "default", "rss" (for Redefine statistical
significance rules) or custom set of rules().
Rules
Default
p >= 0.05 - Not significant
p < 0.05 - Significant
Benjamin et al. (2018) ("rss")
p >= 0.05 - Not significant
0.005 <= p < 0.05 - Suggestive
p < 0.005 - Significant
References
Benjamin, D. J., Berger, J. O., Johannesson, M., Nosek, B. A., Wagenmakers, E. J., Berk, R., ... & Cesarini, D. (2018). Redefine statistical significance. Nature Human Behaviour, 2(1), 6-10.