When it comes to the topic of siblings, there seems to be a bevy of theories as to how these relationships affect behavior. Is there a major difference between having a brother or a sister? Are only children at a disadvantage compared to children with brothers or sisters? Do siblings really argue that much? Anthony and Laci give you the 411 on why your brothers or sisters can actually make you happier, how many kids you might need and much more!

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Anthony on Twitter: @acarboni
Laci on Twitter: @gogreen18
Trace on Twitter: @trace501

Read More:

http://news.discovery.com/human/siblings-can-make-each-other-happier-121210.html
http://news.discovery.com/human/siblings-traits-human.html
http://news.discovery.com/human/only-children-friends.html
http://psychologytoday.com/blog/singletons/201008/what-difference-do-siblings-make
http://psychologytoday.com/blog/singletons/201008/what-difference-do-siblings-make
http://shine.yahoo.com/parenting/6-reasons-why-experts-sibling-rivalry-good-kids-173100000.html
http://health.usnews.com/health-news/family-health/articles/2009/07/31/7-ways-your-siblings-may-have-shaped-you?page=2