This study examined mothers’ perceptions of the positive impact of having a child with an intellectual disability. Trajectories of positive impact from 7 time points were developed using latent growth modeling and 2 predictors: culture (Anglo, Latino) and child disability status (intellectual disability, typical development). Data were from 219 mothers of children from age 3 to 9 years. Growth trajectories reflected a general decline in positive impact on Anglo mothers. On average, at age 3, Anglo mothers reported significantly lower initial values on positive impact when their children had an intellectual disability, but Latino mothers did not. Across all time points, Latino mothers had higher scores on the positive impact, regardless of whether they had a child with an intellectual disability or a typically developing child.