Tsifira drops a plastic strawberry into a little plastic container. It makes a hollow sound, and the almost-2-year-old lets out a "Wow!""Wow! You put one strawberry in,” said a smiling Deneen Coren, her teacher. In a toddler room at…

Parent-child interaction therapy is a type of therapeutic intervention available for the parents and guardians of children between the ages of 2 to 7 who aim to strengthen the connection with their child and reduce unwanted disruptive…