Depends on your definition of therapy. Is signing to your child "ASL therapy"? Is walking through the zoo talking about the animals therapy?
Actually if you study linguistics it is. There is such a thing as surface structure and deep structure in language and thought. If you follow linguistics to its ultimate conclusion then the richer a person's deep structure is the more capable, sane, and adjusted, the person will be.
This therapy starts as an open ended meta-dialogue between parent and child.
In its simplest form surface structure is that which is seen, heard, and expressed. The child sees a monkey and learns to associate certain things with it: sight, smell, actions such as swinging from a tree by its tail, a sound it makes; And is told to represent the creature using the sign "monkey" or the word "monkey" and is perhaps taught how to spell or lip read "monkey."
Deep structure begins when you the parent figure explain that this zoo is not the monkey's natural habitat, and deepens further when you explain the various roles this monkey plays in the lives of different groups of humans:
Some people never get to see a monkey in real life, only in a picture book.
In Sri Lanka monkeys live in a temple and people worship them.
Some tribes eat monkeys.
Some monkeys are helper monkeys for people in wheel chairs.
Compare this to the deep structure stifling done by the parent who simply says, "This is a monkey. An obnoxious, shit throwing, squalling, little creature we are not related to."
When a child goes through the stage of asking "Why" until the parent wants to scream, it is in reality asking for deep structure for its subconscious mind.
The parent with no deep structure of their own will pass it on by telling the child to quit asking so many stupid questions.
The parent with well developed deep structure themselves will answer the child to the extent of their capability.
The parent who knows what is going on might explain to the child that why is not always the right question to ask. We also have what, when, where, how, and who, and often these are the questions that will yield the best results.
Is going to the zoo and signing or talking about the animals therapy?
You BET!