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http://www.sfu.ca/~jcnesbit/EDUC220/ThinkPaper/Spera2005.pdf
https://www.reddit.com/r/Parenting/comments/2ablcj/im_upset_by_the_science_that_says_parenting/
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https://www.researchgate.net/profile/Albert_Alegre/publication/258193465_Parenting_Styles_and_Children's_Emotional_Intelligence_What_do_We_Know/links/0046353757280b1b97000000/Parenting-Styles-and-Childrens-Emotional-Intelligence-What-do-We-Know.pdf
http://psych.colorado.edu/~willcutt/pdfs/Belsky_2011.pdf
https://www.researchgate.net/profile/Bernardo_Horta/publication/280497822_Breastfeeding_and_intelligence_A_systematic_review_and_meta-analysis/links/5713706208ae39beb87cd988.pdf
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https://pdfs.semanticscholar.org/5af1/d2d8657e0a8870c06eed32c0e4515ff648ac.pdf