This week’s look at family issues tackles the impact of technology in the household. Blackberries, laptops and mobile phones may increase access to knowledge, but do they isolate children from their parents? We talk about this with Sherry Turkle, director of the MIT Initiative on Technology and Self, and author of the book “Simulation and its Discontents.” We’re also joined by Lisa Belkin, who writes the blog Motherlode for The New York Times.