Luijk, M.P.C.M.

attachment study child cortisol infant children disorder attachment security effect reactivity mother sample stress problem security cortisol reactivity depression association generation development interaction grandparental psychiatry anxiety van ijzendoorn behaviour level disorganization parent generation r study sensitivity lifetime rotterdam psychopathology externalizing problems behavior child problem behaviour research ijzendoorn symptom score quality depressive allele cortisol levels externalizing internalizing netherland table group parenting family classi journal erasmu genotype stress reactivity fication university relationship assessment child development bakermans-kranenburg model system child psychology attachment disorganization situation fkbp 5 snp grandparents father procedure gunnar attachment quality result haplotype generation r attachment relationship center factor