The main objective is to study donors' personality and motivations characteristics of the different recruitment methods and thus to answer questions related to the donation's approach, its representations as well as motivations and the profile of the donors.

The methodology used is mixed with a quantitative and qualitative approach. The first one is a psychosocial approach with two groups: donors of gametes without children, and donors who have already procreated. Two questionnaires will be used in this survey. The first aims to study the donors' socio-personal characteristics and motivations. The latter studies donors' personality traits.

The second approach is qualitative by a clinical case study. It is a psycho-dynamic approach, taking into consideration the donor (men and women), with all their subjectivity, their personal and family history and their representations.

Inclusion Criteria:

• Candidates for gametes donation
• Less than 45 years for men
• Less than 37 years for women
• Affiliation to social service

Exclusion Criteria:

• Under guardianship, or trusteeship

Volonteers are recruted in the different CECOS. These subjects (who have already procreated, or not) are going to donate sperm/egg.