Some say 1,000 people used in a poll as being not enough, this study used only 20;
But in saying it was only 20, the study shows more research needs to be conducted to get a better picture of how children are affected in same sex family's. Simply put; more data needs to be gathered.
Conclusion of the study:
https://www.hindawi.com/journals/drt/2016/2410392/
Key points in bold, do not dismiss the data out of hand, but also don't be a knob jockey and start making posters demonising same sex couples with children on the back of a study using only 20 family's with same sex parents.