Psychiatr. Pol. 2015; 49(3): 625–636 PL ISSN 0033-2674 (PRINT), ISSN 2391-5854 (ONLINE) www.psychiatriapolska.pl DOI: http://dx.doi.org/10.12740/PP/41039 The study was not sponsored. The early childhood sexual experiences functioning in adult partner relationship Agnieszka Izdebska, Maria Beisert, Anna Roszyk Department of Social and Clinical Sexology, Institute of Psychology, Adam Mickiewicz University Head: Prof. dr hab. M. Beisert Summary Aim. The aim of the present research was verifcation of the hypothesis for the infuence of negative sexual experiences in sexual development on the quality of partner relationships in the adult life. Special attention was given to the infuence exercised by the level of erotization in the environment of the family of origin and to the experience of child sexual abuse. The quality of partner relationships was recognized using Jurg Willi’s concept through the analysis of intensity of dysfunctions (collusions) in those relationships. Methods. The study was conducted on a population of 170 adults in partnerships. The surveyed group flled in the Questionnaire on Models of Sexual Upbringing in Families, the Couples Collusion Questionnaire and the Questionnaire on Sexual Abuse of Children. Results. Positive interrelation has been confrmed between the level of erotization in the family of origin and the oral, anal and oedipal partner collusion in the procreative re- lationships of individuals. Such link has not been confrmed for narcissistic collusion. The interrelation between the sexually abusive experiences and the partner collusion has only been confrmed in masculine group within the oral collusion and the anal collusion. Conclusions. The fndings largely support the assumption that there is a connection be- tween the character of sexual experiences in childhood and functioning in adult partnership. Key words: sexual abuse of a child, psychosexual development, couples Introduction Childhood is a key period for the development of core personality structures. Adverse experiences like sexual traumas are deemed relevant factors in the process of nervous system formation and thus, in the regulatory mechanisms of personality [1–3]. In particular, the sphere that bears the severe consequences of sexual abuse in