Han, 2021, said that
For example, the model suggests that a shift in the social acceptability of talking about one’s successes,or of discussing personal investments more generally, can have large effects on risk taking and active investing. This suggests a possible explanation for both secular and higher-frequency shifts in investor behavior.
I am wondering what does "secular" mean in this context. I did a search from Cambridge dictionary and it says that it is like "non-religious". However, I still cannot fit this meaning to this specific context.