'You’re my best friend - I hate you.' Sometimes siblings can go from laughing to fighting in seconds – but how do you deal with it? The Parentland team hear how you can encourage your children to get along with each other, and learn how environment and culture may play a part in whether one child is favoured over another. Featuring Laurie Kramer, a professor of psychology and clinical psychologist who specialises in sibling relationships. Please note it is no longer possible to contact this programme by email.