[영문]The objective of this study was to explore what adolescent grandchildren have learned from having a grandparent who suffers dementia and what coping strategies they might recommend for other adolescents in similar situations. We also present information on background factors influencing lessons learned and coping strategies. Adolescent grandchildren living in Barcelona, Spain participated in the study (N = 138). Qualitative analysis was conducted on responses to 2 open-ended questions regarding lessons learned from having a grandparent with dementia and advice to other grandchildren facing similar situations. Five learning and 4 coping strategies emerged from the analysis. Adolescents reported about the value of life, the complexity of the life-span, and changes in personal characteristics such as patience and responsibility as a result of the experience. Advice to other adolescents primarily focused on accepting the dementia as well as acquiring behavioral coping strategies. Binary logistic regression analysis revealed that type of care grandparent receives?day center versus nursing home?and age of the adolescent influenced lessons learned and coping strategies. Implications for the developmental tasks of the grandchild during adolescence are discussed.