My mother says if I have pictures of babies in my room, it will positively affect my unborn child. Is this an old wives tale or is there some scientific explanation?

I thought there is a saying of, look more beautiful babies, ur baby come out will be beautiful too. (Anyway don't try so hard, my aunt baby came out, and she got a shock as it's not what she expected to look like.) There is many old wives tales, just listen and avoid what you like will do. You won't know, whether you are the "lucky" one or not when you disobey the tales.