Perceived favoritism on the part of a mother can cause long-term psychological effects on all her children well into adulthood, according to new research [1]. Gerontologist Karl Pillemer from Cornell University looked at 275 mothers and their 671 adult children and found that in families with a perceived sense of favoritism, children were more likely to exhibit depressive symptoms as adults. Interesting, this applied to both the favored children and non-favored children. The study found that it’s not the type of treatment each child receives that matters so much as being raised in an environment where a sense of unequal treatment is present.