This theory is supported in another more qualitative study wherein adoptive relationships marked by sameness in likes, personality, and appearance, were associated with both adult adoptees and adoptive parents report being happier with the adoption.Other studies provide evidence that adoptive relationships can form along other lines. A study evaluating the level of parental investment indicates strength in adoptive families, suggesting that parents who adopt invest more time in their children than other parents, and concludes "...adoptive parents enrich their childrens lives to compensate for the lack of biological ties and the extra challenges of adoption." Another recent study found that adoptive families invested more heavily in their adopted children, for example, by providing further education and financial support. Noting that adoptees seemed to be more likely to experience problems such as drug addiction, the study speculated that adoptive parents might invest more in adoptees not because they favor them, but because they are more likely than genetic children to need the help.Psychologists findings regarding the importance of early mother-infant bonding created some concern about whether parents who adopt older infants or toddlers after birth have missed some crucial period for the childs development. However, research on The Mental and Social Life of Babies suggested that the "parent-infant system", rather than a bond between biologically related individuals, is an evolved fit between innate behavior patterns of all human infants and equally evolved responses of human adults to those infant behaviors.
Kanuman may refer to:

Kanuma, Tochigi, a city in Tochigi Prefecture, Japan
Kanuma Station, a railway station
Eri Kanuma, Japanese actress Toshie Furuoya (born 1952)
Naoki Kanuma (born 1997), Japanese footballer
Kanuma, brand name of Sebelipase alfa, a drug