For a large amount of the time if our baby is crying I can stick her on my shoulder or my knee and bounce or rock her (gently), and she will calm down.
Why does this work?
She gets bounced a lot when she is with me. One thing I thought recently is maybe it makes her quiet because she gets scared (similar to the effect a fairground ride has) - which would not be good..
Am I doing her development any harm, perhaps by overstimulating her or suppressing some natural urge?