Please go through members' profile and you may get some. another way is to search authors'a name on these topics in articles section. The articles on astrology and psychology would have been written by members having expertise in these topics.
I have also written an article on astrology that gives the view that this and palmistry etc are fake and unreliable. I am not an astrologer.
Incidents can happen either way. This can be even estimated statistically or on behavior pattern. This is like tossing a coin that may fall either way. Astrologically, give a prediction and this may be true or false.
The fake sadhus and religious persons use this to boost their followers. Suppose 100 individuals go to them for getting son. The sadhu just gives some sort of divine medicine and says that they will get son. Now 30 get and others do not. Most of unsatisfied will not return. But these thirty will come and tell very one that the Sadhu is very divine and is miraculous. Thus the followers increase.