between family types on the representational level, yet significant differences between family types on the observational level. Egg donation mothers were less sensitive and structuring than IVF mothers, and egg donation infants were less emotionally responsive, and involving than IVF infants. No differences were found in relationship quality between egg donor fathers and IVF fathers representationally or observationally. Due to the developmental implications of forming healthy parent-child relationships in early infancy, the finding that egg donor mothers were less sensitive and structuring towards their infants raises concern about attachment styles among egg donor families, and the impacts it may have on infants' future socioemotional development. Telling the child Most psychologists recommend being open and honest with children from an early age. Groups for donor conceived children make a strong case for the rights of children to have access to information about their genetic background. For donor conceived children who find out after a long period of secrecy, their main grief is usually not the fact that they are not the genetic child of the mother who raised (and, usually, gave birth to) them, but the fact that their parents lied to them, causing loss of trust. Furthermore, assuming that egg-donor conceived children have essentially the same reaction as sperm-donor conceived children, the overturning of one's lifelong understanding of who one's genetic parents were may cause a lasting sense of imbalance and loss of control. Telling the children that they were donor conceived is recommended, based on decades of experience with adoption (and more recent feedback from donor-conceived children) showing that not telling children is harmful to the parent-child relationship and to the child psychologically. Even parents who would normally be extremely reluctant to tell the child should consider telling if any of the following scenarios applies: When anyone other than the parents know about the donation, such that the child might find it out from somebody else. When the recipient carries a significant genetic disease, since telling the child will reassure the child that they do not carry the disease. Where the child is found to have a genetically transmitted disorder and it is necessary to take legal action which then identifies the donor. Conversely, when the child is being raised in a religion or a culture that strongly disapproves of donor conception (e.g., a Catholic country where egg donation is illegal), that may counsel against telling the child, at