Social participation of divorced mothers. Duration of formal and actual divorce / frequency, appreciation of and changes in contacts with people outside household last two years and before divorce: own family, family in law, friends, acquaintances, neighbours, ex-partner, social and medical professionals, other divorced women, others / social activities / professional, financial, emotional and practical help before and at present / relation with ex-husband concerning finance and children / possible new friend, reactions of children concerning new friend / strategies for improving social participation / gains and costs of social contacts / loneliness / extraversion and need for self-development / opinions about marriage and family, position as divorced mother / self-image and perceived self-image by environment and society. Background variables: basic characteristics/ household characteristics/ occupation/employment/ income/capital assets/ education